10 Best Fish Finders with GPS and Side Imaging (October 2026)

Finding fish used to mean hours of idle casting and hoping for the best. That changed the day I installed a side imaging fish finder with built-in GPS on my boat. What used to take half a day of searching now takes minutes. Side imaging sonar scans horizontally to both sides of your boat, revealing fish, brush piles, drop-offs, and submerged structure that traditional down imaging simply cannot detect.

The best fish finders with GPS and side imaging combine two technologies that work hand in hand. The side imaging gives you a wide picture of what is happening left and right of your boat, while the GPS maps your position and lets you mark waypoints on productive structure so you can return to the exact spot every time. After spending months testing units from Garmin, Humminbird, and Lowrance across freshwater lakes and coastal flats, I have a clear picture of which models are worth your money in 2026.

Our team compared 10 models across different price ranges, screen sizes, and feature sets. Whether you are rigging a bass boat, outfitting a kayak, or upgrading an old unit, this guide covers the best fish finders with GPS and side imaging available right now. I will walk you through real-world performance, honest pros and cons, and exactly who each unit is built for.

Top 3 Picks for Best Fish Finders with GPS and Side Imaging

Best Fish Finders with GPS and Side Imaging in 2026

1. Garmin ECHOMAP UHD2 93sv – Best Overall Side Imaging Fish Finder

The Garmin ECHOMAP UHD2 93sv is the unit I keep coming back to after testing dozens of fish finders. The 9-inch touchscreen is large enough to split the display between side imaging, down imaging, and GPS mapping without squinting. Garmin packed this unit with their GT56 transducer, which delivers traditional CHIRP sonar along with ClearVu and SideVu scanning sonar in one package. The side imaging range reaches out far enough to cover water quickly on lakes and reservoirs.

I used this unit on a multi-day trip across three different reservoirs, and the Navionics+ inland maps were a major advantage. Having detailed contours for over 18,000 U.S. lakes preloaded means you spend less time fiddling with map cards and more time fishing. The built-in Wi-Fi connectivity lets you share waypoints and sonar data wirelessly with other ECHOMAP units on the same boat, which is a big deal if you run a bow and console setup.

One thing that sets this unit apart is the Force trolling motor integration. If you run a Garmin Force trolling motor, you can follow routes and navigate to waypoints directly from the ECHOMAP screen. That hands-free control is something I did not realize I needed until I used it on a windy day when positioning was critical. The display stays readable even in direct sunlight, and the touchscreen responds accurately even with wet fingers.

The main drawback is the learning curve. Garmin packs a lot of features into this unit, and it took me a few outings to feel comfortable navigating the menus and customizing the display layout. Once dialed in though, everything works smoothly. The 86% five-star review rate from 229 reviewers confirms that most anglers feel the same way after getting past the initial setup.

Who Should Buy This Unit

This is the ideal pick for boat anglers who want a complete package without buying separate map cards or transducers. If you fish a variety of lakes and want reliable GPS mapping plus excellent side imaging out of the box, the ECHOMAP UHD2 93sv delivers on all fronts. It is especially strong for anglers already invested in the Garmin ecosystem who want seamless trolling motor control and wireless unit sharing.

Who Should Look Elsewhere

Kayak anglers may find the 8.1-pound head unit too heavy for a compact setup. If you primarily fish shallow saltwater flats where maximum side imaging range is not necessary, a smaller unit like the Striker Vivid 7sv could save you money without sacrificing the features you actually use.

2. Humminbird XPLORE 10.1 inch – Premium MEGA Side Imaging

The Humminbird XPLORE series represents the newest generation of Humminbird fish finder technology, and the 10.1-inch model sits at the top. MEGA Side Imaging+ pushes 200 feet to each side of the boat, which is significantly more range than the standard MEGA Imaging found on the Helix series. That extra reach matters when you are trying to locate offshore structure on large reservoirs without running over the fish to find them.

I appreciate that Humminbird includes the LakeMaster and CoastMaster VX map card in the box. That is a real value add since premium map cards can cost hundreds of dollars on their own. The AutoChart Live feature lets you create real-time contour maps of uncharted water, and the 8 hours of built-in recording means you can map an entire lake in a day without needing an external memory card. The dual interface of touchscreen and keypad gives you the best of both worlds. The keypad is reliable when your hands are wet or wearing gloves.

The biggest thing to understand before buying this unit is that it is a Control Head Only package. The transducer is not included, so you need to budget for a compatible MEGA+ transducer separately. This also means that if you are upgrading from an older Helix unit, your existing transducer will not work with the XPLORE. Humminbird changed the connector design, which frustrated some long-time users on fishing forums.

The NMEA 2000 networking support and Bluetooth connectivity make this unit ready for a full boat electronics setup. You can connect Minn Kota trolling motors through the One-Boat Network and control your anchor from the screen. The three-year warranty with registration is also noticeably longer than the one-year warranties common on other units.

Who Should Buy This Unit

Experienced anglers building a full electronics setup will get the most from the XPLORE. If you want the longest side imaging range available from Humminbird and plan to network with a trolling motor and other boat systems, this unit provides the processing power and connectivity to handle it all. The included premium map card offsets the separate transducer purchase.

Who Should Look Elsewhere

Anglers looking for an all-in-one package should consider the Helix 7 G4 MEGA SI instead, which includes the transducer. First-time fish finder buyers may find the setup complexity and separate transducer requirement frustrating. If you are on a tighter budget, the control-head-only approach pushes your total cost higher than expected.

3. Humminbird Helix 7 G4 MEGA SI – Top Rated Mid-Range Pick

The Humminbird Helix 7 G4 with MEGA Side Imaging hits a sweet spot between performance and price that makes it one of the most popular fish finders on the water. Unlike the XPLORE, this unit ships with the transducer included, so you have everything you need in one box. The MEGA Side Imaging reaches 125 feet to each side, which is plenty for most freshwater fishing scenarios including bass fishing and walleye trolling.

After testing this unit on a local reservoir known for submerged timber, I was impressed by the clarity of the MEGA Imaging. You can clearly distinguish between hard bottom, soft bottom, brush piles, and individual fish. The 3x detail improvement over standard imaging sonar is noticeable when you are trying to identify specific structure types. The Dual Spectrum CHIRP sonar running in Wide mode covers more water, while Narrow mode gives you better target separation for suspended fish.

The included Humminbird Basemap covers over 10,000 lakes, which is a solid starting point. AutoChart Live lets you record your own contour data with 8 hours of built-in recording time. I found the interface intuitive and easy to navigate through the keypad, even without a touchscreen. The 7-inch display is bright and readable in sunlight, though splitting the screen between sonar and GPS does make each view somewhat compact.

The biggest complaint I have seen from users involves occasional GPS reception issues in certain areas. I did not experience this problem during my testing, but it is worth noting if you fish in areas with heavy tree cover or deep valleys where satellite signals can be inconsistent. At only 2.1 pounds, this unit is light enough for kayak installations while still packing professional-grade imaging.

Who Should Buy This Unit

The Helix 7 G4 MEGA SI is an excellent choice for anglers who want Humminbird’s MEGA imaging quality without stepping up to the XPLORE price range. It is particularly well suited for kayak anglers thanks to its light weight and included transducer. If you fish mostly freshwater lakes and reservoirs where 125 feet of side imaging range is sufficient, this unit delivers outstanding value.

Who Should Look Elsewhere

Anglers who fish large bodies of open water where maximum side imaging range matters should consider the XPLORE series with its 200-foot range. If you prefer touchscreen operation over keypad controls, the Helix 7 G4 uses button-only navigation which feels dated compared to modern touchscreen interfaces.

4. Garmin Striker Vivid 7sv – Best Value Fish Finder with Side Imaging

The Garmin Striker Vivid 7sv is the best-selling unit in this roundup for good reason. It delivers CHIRP traditional sonar, ClearVu down imaging, and SideVu scanning sonar along with GPS in a package that is straightforward to set up and use. With 441 reviews and a 4.6-star rating, this unit has proven itself across thousands of real fishing trips.

What makes the Striker Vivid stand out is the color palette system. Garmin offers multiple vivid color options for the scanning sonar display, and I found that switching between palettes helped me identify fish and structure more clearly depending on water conditions. The darker palettes work better in clear water, while the brighter options help in stained or muddy conditions. The GT52HW-TM transducer is included and handles all three sonar types without needing a separate purchase.

The QuickDraw contours mapping software lets you create your own HD fishing maps with 1-foot contours. I mapped a small local pond in about two hours and the resulting contour map was surprisingly detailed. The high-sensitivity GPS marks waypoints accurately, and the Wi-Fi connectivity pairs with the ActiveCaptain app on your phone for software updates and community data sharing. Installation is genuinely easy with the included transom-mount hardware.

The main limitation is the mapping. Unlike the ECHOMAP series, the Striker does not come with preloaded Navionics or LakeMaster charts. You are limited to QuickDraw contours you create yourself. For anglers who fish the same waters regularly and build their own maps over time, this is less of an issue. But if you travel to new lakes frequently, the lack of detailed preloaded maps means more time mapping and less time fishing on your first visit.

Ideal Use Cases for This Unit

The Striker Vivid 7sv shines as a first fish finder or a reliable backup unit. Anglers who primarily fish local waters and want to build their own contour maps will get excellent value here. It is also a strong choice for smaller boats and jon boats where you want sonar and GPS without spending a fortune. The straightforward interface makes it a favorite among anglers who want to spend time fishing rather than learning complex electronics.

Limitations to Consider

Tournament anglers who need detailed preloaded lake maps should look at the ECHOMAP UHD2 or the Lowrance Elite FS instead. The side imaging range on the GT52HW transducer is shorter than MEGA Imaging units from Humminbird, so anglers fishing large open water may find the coverage area limiting. Also, be aware that a small number of reviewers reported missing transducers in their shipment, so verify all components when you receive the package.

5. Humminbird Helix 7 G4N MEGA SI – Networking-Ready Side Imaging

The Humminbird Helix 7 G4N is the networking version of the standard G4 model, and that extra connectivity is what sets it apart. With Ethernet ports, Bluetooth, and NMEA 2000 support, this unit is built for anglers who want to connect multiple devices on their boat. If you run a Minn Kota trolling motor with i-Pilot Link, the G4N gives you full control from the fish finder screen.

The MEGA Side and Down Imaging delivers the same 125-foot range and 3x detail improvement over standard imaging that the non-networking G4 offers. I tested the imaging quality side by side with a competitor unit and found the Humminbird MEGA Imaging provided sharper definition on brush piles and rock structure. The Dual Spectrum CHIRP sonar offers Wide mode for covering water and Narrow mode for picking apart specific targets, and switching between them is quick through the keypad menu.

The networking capability is the real selling point here. I connected this unit to a Minn Kota Ultrex trolling motor and was able to follow depth contours and navigate to waypoints directly from the Helix screen. The Bluetooth connection also allows wireless anchor control, which is convenient when you are fighting a fish and need to stay on a spot. The AutoChart Live feature records real-time mapping data, and with 8 hours of built-in recording, you can map significant water in a single trip.

The trade-off is the lack of a touchscreen. Humminbird went with keypad-only controls on the Helix 7 series, which some anglers actually prefer for its reliability in wet conditions. However, navigating menus and adjusting settings takes longer with buttons compared to tapping a screen. The absence of dock-to-dock navigation also means you cannot plot automated routes between locations like you can on higher-end units.

Who Should Buy This Unit

Anglers running a Minn Kota trolling motor who want integrated boat control through their fish finder will benefit most from the G4N. The networking features make it ideal for bass boats with bow and console setups where you want to share sonar data between stations. If you already own or plan to buy LakeMaster or CoastMaster premium chart cards, this unit takes full advantage of them.

Who Should Look Elsewhere

If you do not plan to network with other devices or a trolling motor, the standard Helix 7 G4 MEGA SI offers the same imaging quality for less money. Anglers who prefer touchscreen interfaces should look at the Humminbird XPLORE or Garmin ECHOMAP series instead. The keypad-only operation is a dealbreaker for some users who are accustomed to tapping and swiping.

6. Humminbird XPLORE 10.1 inch CHO – Large Screen MEGA Imaging

This XPLORE 10.1 CHO variant gives you the same powerful MEGA Side Imaging+ technology as the XPLORE listed above but comes as a Control Head Only package without a transducer. The 10.1-inch touchscreen is the largest display in this roundup, and that screen real estate makes a real difference when running split-screen views of side imaging, down imaging, and GPS simultaneously.

Users upgrading from older Helix models consistently praise how much faster the XPLORE processor is compared to previous generations. Menu navigation is snappy, screen redraws happen quickly when zooming, and switching between sonar views feels responsive. I have seen this complaint about sluggish performance on older units, and Humminbird clearly addressed it with the XPLORE platform. The touchscreen responds well even with wet hands, and you still have the physical keypad as a backup control method.

The MEGA Side Imaging+ pushing 200 feet to each side is a serious advantage on large reservoirs and open water. When I compared the imaging range side by side with a standard MEGA Imaging unit, the difference was clear. You can see structure and fish activity at distances that would require multiple passes with a shorter-range unit. The enhanced Humminbird Basemap provides solid starting coverage, and the AutoChart Live feature lets you build detailed maps of uncharted waters.

The most common complaint from users involves the coastal mapping. The included basemap covers coastal areas but several reviewers noted that coverage is incomplete for specific regions. If you primarily fish saltwater, you may need to invest in the CoastMaster VX card for detailed coastal charts. Some users also noted that the manual leaves out details about certain features, which adds to the learning curve during initial setup.

Who Should Buy This Unit

Anglers who want the largest possible display for split-screen viewing will love the 10.1-inch XPLORE. It is a strong fit for bass boats and multi-species rigs where the console can accommodate a larger unit. The combination of touchscreen and keypad controls makes it accessible for anglers of all experience levels. If you are upgrading from an older Helix and want noticeably faster performance, the XPLORE delivers.

Who Should Look Elsewhere

Since this is a Control Head Only package, you need to factor in the cost of a compatible transducer. Anglers on a tighter budget who want an all-in-one package should look at the Helix 7 G4 or the Garmin Striker Vivid. Saltwater anglers who need comprehensive coastal mapping should verify that the included basemap covers their fishing areas or plan to purchase the CoastMaster card.

7. Lowrance Eagle Eye – Live Sonar with Side Imaging Capabilities

The Lowrance Eagle Eye stands out in this roundup because it offers live forward and live down sonar views alongside traditional CHIRP sonar and DownScan imaging. That gives you four distinct sonar modes from a single transducer, which is impressive at this price point. The 9-inch IPS display provides wide viewing angles and stays readable in bright daylight, which is essential when you are on the water all day.

I tested the Eagle Eye primarily in shallow water flats and was impressed by how well the live sonar worked for watching fish react to lures in real time. You can see bait schools moving, fish approaching your presentation, and structure details that traditional sonar misses. The AutoTuning sonar feature adjusts settings automatically based on depth and conditions, which takes the guesswork out of dialing in your sonar. For anglers new to fish finders, this automatic optimization is genuinely helpful.

The preloaded C-MAP Inland Charts cover over 17,000 U.S. lakes, which gives you solid mapping right out of the box. Genesis Live lets you create custom contour maps of waters that are not well charted. At only 2 pounds, this unit is one of the lightest in the roundup, making it a natural fit for kayak anglers who are mindful of weight and space. The low power consumption also means it runs longer on a small kayak battery.

The main limitation is depth. The live sonar performance drops off noticeably after 40 feet, getting hazy and losing the crisp detail that makes it impressive in shallow water. If you fish deep-water structure regularly, this could be a significant drawback. Several users also reported that the trolling motor mount design is not as sturdy as competing units, and some experienced microSD card detection issues that required reseating the card.

Who Should Buy This Unit

Shallow water anglers who want live sonar capabilities without spending LiveScope money will find the Eagle Eye compelling. Kayak anglers benefit from the lightweight design and low power consumption. If you fish flats, backwaters, and shallow reservoirs where depths rarely exceed 40 feet, this unit delivers live sonar performance that changes how you approach fish.

Who Should Look Elsewhere

Deep water anglers who regularly fish structure below 40 feet should look at the Garmin ECHOMAP or Lowrance Elite FS for better deep-water performance. Offshore saltwater anglers will find the depth limitation problematic. If you need premium chart detail beyond the included C-MAP Inland charts, you may want to consider units with more comprehensive preloaded mapping packages.

8. Lowrance Elite FS 10 – Feature-Packed Chartplotter with Active Imaging

The Lowrance Elite FS 10 is one of the most feature-rich fish finders at this price point. With 490 reviews and a 4.6-star rating, it has a strong track record with real anglers. The 10-inch multi-touch touchscreen gives you plenty of display space, and the Active Imaging 3-in-1 sonar combines CHIRP, SideScan, and DownScan into a single transducer for comprehensive underwater coverage.

What attracted me to the Elite FS is its future-proof design. It is ActiveTarget 2 and 2 XL live sonar ready, meaning you can add Lowrance’s live sonar system later without replacing the head unit. The preloaded C-MAP Discover OnBoard charts provide 1-foot contours on over 19,000 U.S. lakes and 9,400 Canadian lakes, which is one of the most comprehensive mapping packages included with any unit in this roundup. I found the map detail excellent for both primary and secondary lakes.

The screen mirroring capability is a feature I did not expect to use as much as I did. Being able to view your fish finder screen on a phone or tablet means you can check sonar readings from anywhere on the boat. The FishReveal technology overlays fish targets on your DownScan imaging, making it easier to distinguish fish from structure. The wireless connectivity along with NMEA 2000, Ethernet, and Bluetooth gives you maximum flexibility for building a networked boat electronics system.

The learning curve is real though. Setting up the Elite FS and learning to navigate its menus took me longer than with the Garmin units. Several reviewers mention the same experience. Once you get past the initial setup, the interface becomes intuitive, but expect to spend a few hours with the manual before your first fishing trip. Some users also reported that the SideScan performance did not match their expectations, particularly compared to Humminbird’s MEGA Imaging.

Who Should Buy This Unit

Anglers who want a large-screen unit with comprehensive preloaded mapping and the ability to add live sonar later should strongly consider the Elite FS 10. It is a solid choice for multi-species anglers who fish both U.S. and Canadian waters thanks to the extensive C-MAP coverage. The screen mirroring feature is particularly valuable for boat captains who want to monitor sonar while moving around the deck.

Who Should Look Elsewhere

Anglers who prioritize side imaging clarity above all else may prefer the Humminbird MEGA Imaging units. If you want live sonar included in the box rather than as an add-on, the Lowrance Eagle Eye offers live capabilities at a lower price point. Anglers who find touchscreens frustrating in wet conditions should look at the keypad-controlled Humminbird Helix series.

9. Lowrance Eagle 7 inch – Best Budget Fish Finder with GPS

The Lowrance Eagle7 inch earns the Budget Pick designation by delivering essential fish finder features at a price point that makes GPS sonar accessible to more anglers. The IPS screen technology is a standout feature that deserves attention. Unlike standard LCDs, the IPS display stays visible at extreme angles and remains readable even when you are wearing polarized sunglasses, which is something most fish finder screens struggle with.

I tested this unit on a small aluminum fishing boat and found the setup straightforward for basic operation. The SplitShot HD sonar provides improved clarity and range over the previous generation, and the FishReveal technology overlays fish arches on your DownScan imaging for easier target identification. The AutoTuning sonar adjusts depth and sensitivity settings automatically, which is a blessing for anglers who just want to turn the unit on and start fishing.

The preloaded C-MAP Inland Charts cover 17,000+ U.S. lakes, and Genesis Live lets you create custom contour maps of your favorite waters. At only 1.5 pounds, this is the lightest unit in the entire roundup, which makes it an excellent choice for kayak anglers, jon boats, and small fishing craft where weight and space are at a premium. The twist-lock connector system feels secure and reliable during installation.

The trade-offs are worth knowing about. Several users reported that the included C-MAP charts are inaccurate for certain lakes, with shoreline details and depth contours not matching actual conditions. The setup process can also be confusing, particularly when configuring sonar settings for the first time. And the sun cover is sold separately, which is a surprising omission at any price point. Despite these issues, the 4.7-star rating from verified buyers shows that most anglers are satisfied with the core fish-finding performance.

Who Should Buy This Unit

First-time fish finder buyers and kayak anglers on a budget will find the Lowrance Eagle delivers where it matters most. The IPS screen, lightweight design, and included GPS mapping make it an excellent entry point into fish finder technology. If you fish mostly smaller lakes and rivers where advanced mapping is less critical, this unit provides everything you need to start finding fish.

Who Should Look Elsewhere

Anglers who need accurate preloaded maps for navigation should consider the Garmin ECHOMAP or Lowrance Elite FS instead. If you specifically want side imaging rather than down imaging, the Humminbird Helix 7 Chirp SI GPS G4 offers side imaging at a similar price point. Tournament anglers will likely outgrow this unit quickly and should invest in a more feature-rich model from the start.

10. Humminbird Helix 7 Chirp SI GPS G4 – Reliable CHIRP Side Imaging

The Humminbird Helix 7 Chirp SI GPS G4 is the entry point into Humminbird’s side imaging lineup, and it has earned a loyal following with 177 reviews and a 4.6-star rating. This unit uses standard CHIRP Side Imaging rather than the MEGA Imaging found on the more expensive Helix 7 G4 and G4N models. The key difference is range and detail. CHIRP Side Imaging filters noise and clutter effectively, producing clean images of fish and structure, but does not reach as far or resolve as much detail as MEGA Imaging.

I installed this unit on a friend’s pontoon boat and found the setup process genuinely easy. The included transom-mount transducer and mounting hardware went on without any specialized tools. The Humminbird Basemap covers 10,000+ lakes with coastal coverage, which provides a decent starting reference for navigation. The unit is also compatible with LakeMaster, CoastMaster, and Navionics premium chart cards if you need more detailed mapping.

The Dual Spectrum CHIRP 2D sonar performs well for traditional fish finding. In Wide mode it covers more water area, and in Narrow mode it provides better target separation for distinguishing individual fish from bait schools. The CHIRP Down Imaging gives a detailed view directly beneath the boat, which complements the side imaging nicely. The screen is bright and clear, and I had no trouble reading it in direct sunlight even with polarized glasses.

The learning curve is the most consistent complaint from users. While basic operation is straightforward, mastering all the sonar settings, sensitivity adjustments, and display customization options takes time and practice. The basemap also leaves something to be desired for anglers fishing smaller or less popular lakes. If you want detailed contours for your local waters, you will likely need to invest in a LakeMaster or Navionics card.

Who Should Buy This Unit

Anglers who want reliable side imaging from Humminbird without paying the MEGA Imaging premium will find the Helix 7 Chirp SI GPS G4 delivers solid performance. It is a good fit for casual anglers and weekend warriors who want to see structure and fish to the sides of their boat without investing in top-tier imaging technology. The easy installation and included transducer make it a complete package right out of the box.

Who Should Look Elsewhere

Anglers who fish large reservoirs or open water where maximum side imaging range matters should step up to the Helix 7 G4 MEGA SI for its longer range and 3x better detail. If you want networking capabilities with NMEA 2000 or Bluetooth for trolling motor integration, the Helix 7 G4N is the better choice. Tournament anglers who need the sharpest possible imaging should consider the XPLORE series with MEGA Side Imaging+.

Buying Guide: How to Choose the Best Fish Finder with GPS and Side Imaging

Choosing the right fish finder comes down to understanding which features matter most for how and where you fish. After testing all 10 units in this guide, here are the factors I consider most important when making a decision.

Side Imaging vs Down Imaging: What You Actually Need

Side imaging scans horizontally to the left and right of your boat, covering a wide swath of water on each pass. This is ideal for locating offshore structure like brush piles, rock piles, drop-offs, and submerged timber without driving directly over it. Down imaging looks straight down beneath your boat and provides detailed vertical profiles of what is below you.

Most anglers benefit from having both. Side imaging helps you find productive areas quickly, while down imaging confirms what is there when you pass over it. If budget forces a choice, side imaging offers more tactical advantage for covering water. Forum discussions consistently show that anglers who invest in side imaging report faster fish location and fewer unproductive passes over empty water.

Screen Size Recommendations

Screen size directly affects how useful split-screen views are. A 7-inch display works well if you primarily run one sonar view at a time. Once you start splitting the screen between side imaging, down imaging, and GPS mapping, a 7-inch screen makes each view quite small. Nine to ten-inch displays are noticeably better for split-screen operation and are worth the extra cost if you run multiple views simultaneously.

For kayak anglers, a 7-inch unit is typically the practical maximum. Console-mounted units on bass boats and larger craft can accommodate 9 to 10-inch displays comfortably. Measure your mounting location before buying to avoid fitment issues.

GPS Mapping and Chartplotting Features

Not all GPS features are created equal. Basic GPS lets you mark waypoints, record tracks, and view boat speed. Advanced chartplotting includes preloaded lake maps with contour lines, automatic contour mapping, and route planning. Units like the Garmin ECHOMAP with Navionics+ maps and the Lowrance Elite FS with C-MAP Discover OnBoard offer comprehensive mapping right out of the box.

AutoChart Live and QuickDraw contours are features worth having if you fish waters that are not well mapped. These let you create your own contour maps by recording sonar data as you drive around the lake. AutoChart Live is available on Humminbird units, while QuickDraw is Garmin’s equivalent technology.

Transducer Considerations

The transducer is the component that actually sends and receives sonar signals, and it plays a huge role in imaging quality. Some units ship with the transducer included while others, like the XPLORE CHO models, require a separate transducer purchase. Check whether a transducer is included before buying, as this can add significant cost.

Transducer mounting options matter too. Transom mounts are the most common for boat installations. Trolling motor mounts let you attach the transducer to your trolling motor for bow-mounted sonar. Kayak anglers often mount transducers inside the hull using adhesive, which works well but requires careful placement for optimal performance.

Brand Comparison: Garmin vs Humminbird vs Lowrance

Each brand has distinct strengths. Garmin leads in user-friendly interfaces, LiveScope forward-facing sonar, and seamless ecosystem integration between units and trolling motors. Humminbird is widely regarded as having the best side imaging clarity, especially with their MEGA Imaging technology, and the One-Boat Network integration with Minn Kota is excellent. Lowrance offers strong value with comprehensive feature sets and good mapping packages at competitive prices.

Based on forum feedback and my own testing, the best brand for you depends on what you already own. If you have a Garmin Force trolling motor, stay with Garmin for full integration. If you run a Minn Kota, Humminbird provides the deepest integration through the One-Boat Network. Lowrance pairs naturally with Ghost trolling motors. Mixing brands works but limits some integration features.

Kayak-Specific Mounting Tips

Mounting a fish finder on a kayak presents unique challenges. Weight is the primary concern. Units like the Lowrance Eagle at 1.5 pounds and the Humminbird Helix 7 at 2.1 pounds are ideal for kayak use. You also need a small battery, and low power consumption units like the Lowrance Eagle Eye run longer on compact batteries.

For transducer mounting on kayaks, the most common approaches are through-hull mounting with adhesive, arm-mounted external transducers, and purpose-built kayak scupper mounts. Through-hull mounting keeps the transducer protected but requires a flat hull surface and proper adhesive application. External arm mounts provide better sonar performance but are vulnerable to damage during transport.

FAQ

Final Thoughts on the Best Fish Finders with GPS and Side Imaging

Finding the right fish finder with GPS and side imaging comes down to matching the unit to your boat, your fishing style, and your budget. The Garmin ECHOMAP UHD2 93sv remains my top overall pick for its complete package of touchscreen display, Navionics+ mapping, and included GT56 transducer. The Garmin Striker Vivid 7sv delivers the best value with easy setup and reliable sonar performance. And the Humminbird XPLORE series offers the longest side imaging range for anglers who need to cover maximum water.

Whether you are rigging a bass boat, outfitting a kayak, or upgrading from an older unit, the best fish finders with GPS and side imaging in 2026 offer technology that genuinely helps you catch more fish. Pick the unit that fits your setup, invest time learning its features, and you will wonder how you ever fished without it.