My fish easy showes four different sized fish icons. I didnt see anything in the book about what each sized Icon means? Do any of you know? I'm slowly learing to use this thing. It has a little headlight for a Transducer. I have the headlight mounted in a horizontal position at the stern, on a spring to restore it to the same position. Going fast causes it to swing up a little but it still reads the bottom and fish at 26.7 mph (GPS) However I learned the hard way, if you glide into the mud, the Xducer sends Rabbit Tracks and you have to clean it off and re-start the Fish Easy.