Agree. We have found as a `rule of thumb` that denser cover shallower and thinner cover deeper works well, ie, "C" trees in a line tops towards the shore with PVC at the deepest end works pretty well. And am not saying not to put out a single "C" tree by it`s lonesome. According to ODNR`s research, a single "C" tree by itself affects an area about 2-3X it`s volume. In groups of 2-4 they affect an area roughly 3-4X their volume. In groups of 5-12 they affect about 5X their volume; after about a dozen, the area effected is constant . Am NOT saying a single tree sunk in a `hunny spot` won`t do well...Also, in rows shallow to deep you are covering a lot of the water column; especially in mid spring and early fall, they can be very productive for many species of fish...