Jon boats (flat-bottomed aluminum boats) are the utility vehicle of fishing — simple, durable, and cheap to operate. The right fish finder for a Jon boat is relatively straightforward: compact, simple to install, and readable in the open-boat environment.
5-inch CHIRP fish finder with built-in GPS, clear water to 1,600 ft, and simple installation — the most commonly recommended Jon boat fish finder. Suction cup transom bracket included for tool-free installation.
5-inch color fish finder with FishReveal technology, SplitShot transducer for down imaging, and simplified interface. Better image quality than entry-level units at a reasonable Jon boat price.
Humminbird's budget entry — down imaging and 2D sonar at the lowest price point. For Jon boat anglers who want the photo-realistic bottom image without a significant investment.
Jon Boat Installation Considerations
Jon boat installation is typically simpler than fiberglass boats because the flat aluminum transom gives a clean mounting surface and the boat interior is open. Power the unit from a dedicated battery (a small 7–12Ah AGM runs a 5-inch unit for a full day). Route wiring through plastic conduit or cable raceways to keep it organized and protected from foot traffic. The suction cup bracket included with many units works for trial periods; for permanent installation, mount the bracket with self-tapping screws into the transom.