Before you can decide which fishfinder is the very best one for you, you should be aware of the way the Fish Finder perf
Fishfinders use sonar technology to locate fish-or any other good object-under the surface of the water. Sonar sound waves move through the water. The farther the sound waves travel, the longer they fan out into a cone shape and increase in diameter. Deeper water naturally causes the cone to become bigger as it goes from it's origin. The form of the object struck will be decided by how much time it took the signal to head out and then bounce the sound wave echo back compared to the surrounding area. The echo will subsequently appear on your fishfinder display and you'll see the aproximate size, form and thickness of this object.
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