I was wondering if anyone had any input to this theory/problem I am having with down imaging quality on lakes.I get great returns from my HB999 on side imagining.Name: fish 427.jpg Views: 894 Size: 68.8 KBAs far as down imaging goes I don't get any good returns at Mark Twain Lake (blurred image), but when on the MO river it is good. Why would this be? I would think with the silt/mud in the river it would hurt the image, even though MTL is a muddy lake at middle fork I don't get the same return.