You are on the water, scanning for bass holding near a submerged creek channel. Your current fish finder shows a fuzzy blob, but you know there is more structure just out of view. This is where side scan imaging changes everything. It paints a detailed picture of what lies to the left and right of your boat, revealing fish-holding cover you never knew existed.

In this guide, we evaluate the best fish finders with side scan imaging for 2026. Whether you are a weekend angler or a tournament competitor, we cover models from Lowrance and Humminbird that deliver clear underwater views. Our goal is to help you choose a unit that fits your fishing style and budget. For more context on current deals, check out our roundup of top fish finder Black Friday deals.

Buying Guide

Side Imaging Technology and Coverage

Side imaging uses sonar beams to create a photo-like view of the underwater environment on each side of your boat. The width of coverage varies by model and frequency. For example, the Humminbird Helix 7 G4N with MEGA Side Imaging scans up to 125 feet per side, revealing fish, brush piles, and drop-offs in high detail. The Lowrance Elite FS 12 uses Active Imaging 3-in-1 to deliver SideScan alongside DownScan and CHIRP sonar. When choosing, consider the typical water depth and width you fish. Wider coverage helps you cover more water quickly.

If you are new to side imaging, our best rated fish finders guide offers a broader perspective on top-performing units. Side scan is especially valuable for locating isolated cover like stumps or rock piles that hold bass and walleye. The Lowrance HOOK Reveal 5 SplitShot uses DownScan Imaging for a clear view directly below, but does not include side scan. For true side imaging, look at the Humminbird Helix 7 G4N or the Lowrance Elite FS 12.

Display Size and Resolution

A larger, higher-resolution screen makes it easier to interpret side scan images. The Lowrance Elite FS 12 features a 12-inch multi-touchscreen that shows charts and sonar data simultaneously with crisp detail. The Humminbird Helix 7 G4N has a 7-inch display, which is a good balance for boats with limited dash space. Smaller units like the Humminbird Helix 5 G3 have a 5-inch screen that is still readable in sunlight, but you may need to scroll more to see full side scan views. Think about where you will mount the unit and how much screen real estate you need for split-screen views of GPS and sonar.

For kayak anglers, compact displays are a priority. The Lowrance Eagle 4X has a 4-inch portrait screen that fits tight spaces, though it lacks side scan. If you want side imaging in a smaller package, the Humminbird Helix 5 G3 is a solid option. Our lowrance HOOK reveal 7 tripleshot review covers a mid-size unit with side imaging capabilities.

GPS and Mapping Features

Integrated GPS and mapping enhance the value of a side scan fish finder. The Humminbird Helix 7 G4N comes with Basemap covering 10,000+ lakes and U.S. coastlines, plus AutoChart Live for creating custom depth maps. The Lowrance Elite FS 12 includes C-MAP Discover charts with detailed inland and coastal contours. Real-time mapping lets you mark productive waypoints and return to them later. For anglers who fish unfamiliar waters, good mapping is essential. The Lowrance HOOK Reveal 5 SplitShot has preloaded C-MAP inland maps for almost 4,000 lakes, but does not have side scan. Pairing GPS with side imaging helps you identify structure and then navigate to similar spots elsewhere.

If you prioritize mapping, the Humminbird Helix 5 G3 GPS Fish Finder offers AutoChart Live with eight hours of recording time. For a complete overview of fish finders with GPS, see our best fish finder with GPS and maps.

Transducer Quality and Installation

The transducer is the heart of side imaging performance. The Humminbird XM 14 HW CMSI T Compact MEGA Side Imaging+ transducer works with APEX, SOLIX G3, and XPLORE models, delivering up to 400 feet of side-to-side coverage. The Lowrance Elite FS 12 includes an Active Imaging 3-in-1 transducer that combines CHIRP, SideScan, and DownScan. Installation type matters: transom mount is common for small boats, while through-hull or trolling motor mounts suit larger vessels. The Lowrance Eagle 4X uses a simple transom-mount bullet transducer that is easy to install on kayaks. For side imaging, ensure the transducer is mounted level and free from turbulence for clear images. Our Lowrance Eagle 4X review covers installation tips for entry-level units.

Final Thoughts

Choosing the best fish finder with side scan imaging comes down to your fishing style and budget. For anglers who want premium side imaging with a large display and live sonar readiness, the Lowrance Elite FS 12 Fish Finder with Active is a powerhouse. If you prefer a more affordable option that still delivers excellent side scan detail, the Humminbird Helix 7 G4N GPS Fish Finder offers MEGA Side Imaging and reliable GPS mapping. Both models will transform how you see underwater structure and help you catch more fish.

Frequently Asked Questions

What is side scan imaging on a fish finder?

Side scan imaging uses sonar beams to create a detailed picture of the underwater environment to the left and right of your boat. It reveals fish-holding structure like rocks, logs, and weed beds that traditional down-looking sonar might miss. This technology is especially useful for locating isolated cover in open water.

Do I need side scan if I already have down imaging?

Down imaging shows a clear view directly beneath your boat, but side scan expands your coverage area significantly. If you fish large lakes or rivers and want to find structure away from your boat, side scan is a valuable addition. Many anglers use both technologies together for a complete underwater picture.

What is the best side scan fish finder for a kayak?

For kayaks, compact units like the Humminbird Helix 5 G3 GPS Fish Finder offer side imaging in a small form factor. Look for a unit with a transducer that mounts easily on the kayak hull or trolling motor. The Lowrance Elite FS 12 is larger but can be used on a kayak with a suitable mounting solution. For entry-level options, see our humminbird PiranhaMAX 4 review.

Can I add side scan to an older fish finder?

In some cases, you can add a side imaging transducer to a compatible fish finder. The Humminbird XM 14 HW CMSI T Compact MEGA Side Imaging+ transducer works with newer Humminbird models like APEX, SOLIX G3, and XPLORE. Check your fish finder’s specifications to see if it supports external side imaging transducers. Upgrading the transducer can improve imaging without buying a new unit.