Obviously if the fish are at the bottom of the lake a person is not going to try to use some type of floating bait. Fish finders can also tell an angler the temperature of the water. It is quite clear that fish finders can be a huge help. Current applications of fish finders Currently fish finders have many different uses. The most common use of a fish finder is for recreational and commercial fishing purposes.
Many people also find fish locators useful for finding harmful objects and shallow water.
Hitting a large tree that is in the water or running into a sand barge could be very hazardous to a person's boat. Fish finders often prevent accidents like this from occuring.