Sonar Basics
What Is a Fish Finder Transducer?
What is a fish finder transducer? Learn how it sends sonar pulses, receives echoes, and works with your display, plus how to choose a mount.
Fish Finder Critic
Find clear fish finder buying guides, sonar explanations, and setup tips. Learn how CHIRP, side imaging, frequencies, depth readings, and settings work.
Latest guides
Screen Reading And SettingsHow to Use a Lowrance HOOK Fish Finder
Learn how to use a Lowrance HOOK fish finder, read sonar returns, adjust sensitivity and range, and save settings for clearer views on the water.
Imaging And Live SonarHumminbird XPLORE 12 CHO Transducer Setup
Humminbird XPLORE 12 CHO is a control head option, not a complete sonar setup. Compare included imaging transducers with MEGA Live 2 to choose the gear you need.
Fish Finder GuideGarmin STRIKER Cast GPS Review
Garmin STRIKER Cast GPS review: see how its custom mapping, smartphone sonar and castable design fit shore fishing, plus alternatives for boat use.
Fish Finder GuideGarmin Striker Plus 4 vs Vivid 4cv: Which Should You Choose?
Garmin Striker 4 Plus vs Vivid 4cv: compare CHIRP sonar, ClearVü imaging, mapping and GPS to choose the fish finder that fits your fishing.
Imaging And Live SonarBest Pole Mounts for Lowrance ActiveTarget 2
Compare Lowrance ActiveTarget 2 pole mounts by mounting style, adjustability and included parts. See which setup fits your boat and sonar aiming needs.
Fish Finder GuideBest 9 Inch Fish Finders
Compare the best 9 inch fish finder options by display size, sonar, mapping and controls. Find a fit for your boat, fishing style and budget.
Imaging And Live SonarBest Forward Facing Sonar Transducers
Compare the best forward facing sonar transducers for compatible displays, live views and different scanning needs. Check system fit before choosing.
Fish Finder GuideBest Depth Finders for Fishing
Compare the best fishing depth finder options for boats, kayaks, shore fishing and ice fishing. See how sonar units and simple depth tools differ.