5 thoughts on “Do fish finders really work? How do they work? What are some inexpensive effective finders?

  1. yes they do work. they send out a sonic beam like a bat does. it will travel through water and hit the bottom and then bounce back. say it take 1 second to do that. to hit the bottom and back. if there was a fish in the way the wave would bounce off the fish and come back sooner. really only works in large schools of fish.

  2. A fish finder is just a small sonar unit. They send out sound waves that bounce back. The head unit then differentiates between fish, structure, soft and hard bottoms. The more expensive the unit the better they work. I’ve got a cheap one and it often gives false readings mistaking structure like brush for fish.

  3. if you use them as they are designed.
    to locate and identify bottom structure like creek channels, drop-offs, points, rocks, trees and other structure. bait schools.
    unless fish are suspended in open water, you won’t see many of them because they may be close to the bottom or tight to structure.
    l use an inexpensive model called the “fishin’ buddy” by bottom line on my float tube.

  4. They work for sure. They constantly send out signals to the bottom. When something is in the way of the signal. it usually is a fish. I use mine mainly to check the depth and structure while I am trolling. The cheaper models start out at 75$ and go up from there.

  5. They are sonar units. The air bladder of a fish is what is read by the fish finder. Some units are better than others in as they allow for better sensitivity and the ability for you to make adjustments to the unit to decrease clutter. Go to some of the manufacturers websites like Hummingbird, Lowrance, Furuno, Raymarine and others to learn more.

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