taken in a river,
most of the bottom is muddy/sand with a rippled effect from the river current i beleive...and also some smooth sand flats
.... the mottled appearance im asking about..(i think may be weeds) is at the end of a long smooth sandy transition.
and seems to be in patchy areas, i have images from same waterbody with rocks ...they have a differnt appearance with a discernable shadow..
im trying to learn how to set SI to show fish near the bottom (walleye)
...having a tough time getting it right ...
ps the ones that are suspended are easy to find with shadows...have tried sharpness but find it grainy....