Thanks for all the replies. We're east of Moscow. The pond was built this year and is ~2/3 filled. Next year we hope to stock with CC (I put a bunch of habitat in for them already). I like the carpeting idea. We have a fairly gentle slope down to the 10' depth, a flat area, then a large pool at 13.5 feet. I obviously can't cover the entire bottom with carpet. What stops the gravel from sliding down the slope to the bottom?