well, once again as soon as you get out of the box it is quite simple. thanks for the great ideas. I'm going to start building next weekend! I had no clue that fish dont care how deep it is ,just how deep the structure is. One more question ; I have an airation windmill and the stone is in the deepest part of the pond.Do the fish like or dislike the bubbles if they passed through the structure? Also does a floating dock count as structure and would it help to attach pvc trees to the underside of the dock? And is this structure for the bass , bluegill , or minnows or all of the above. Sorry, that was actually three questions, I shouldn't have been in express line... Kevin