Your welcome. I know I can get pretty detailed and deep. That's why I posted the simplified version.
Bottom line is that these things really do show you what the bottom of the lake looks like. They are not that difficult to use once you work with them a lot.
And there are many web sites and forums that have people that can help everyone learn to use these sonar units. There are a lot of pictures posted that show things like fish or sunken boats in the lake.
I make a recording the other day and today spent some time looking at it on my computer. I saw some fish suspended in the water column. I could see the bright white dots which are the fish and then I also saw their shadows some distance away from the actual fish school. It was as if my transducer was a flash light beam and the fish cast a shadow on the bottom of the lake. The farther the shadows are away from the object the higher in the water column the fish are. Fish right next to the lake bottom will have a shadow right next to the fish. But fish that are suspend up off the bottom have their shadow some distance away from them. And large schools of fish that are bunched tightly together casts a lot of shadows on the lake bottom.
Plus there are many videos on U Tube that show how to use the Humminbird and the Lowrance Units.
Originally Posted by Bandit1
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