Uh oh, not sounding so good on the water depth thing. I was kinda operating on the "no weeds after about 48" and deeper" theory. Sounds like cattails are in a cat-egory of their own. So, what does the rook' do in preparation to fight this menace? My shallow areas have only been cleared of timber and are comprised of run-off silty topsoil for about 3 - 4 feet, then clay. My plan is to keep the shoreline sharp at about 3:1, 4' deep at the perimeter, sloping to about 6' deep average (this is in an area of about 1 acre). (I planned to cut in some bottom-scaping in this area...perhaps a shelf or two parallel to the shore as the bottom runs off deeper?)