How high do you lake erie guys set your sensitivity on your sonar. Over in lake Michigan I have been told they set it till the screen blacks out and then bring it back till they can see the screen. It seems this might not be the best settin for 20 to 30 fow and a mud or clay bottom. I've read the manual fro my lowrance, but would like to hear from the voice of experiance. I fish Bolles Harbor area, so Fermi, to Turtle Island, and the Light House to the turnaround bouy.
Thanks
Mitch