I'd like to put in a small artificial stone waterfall. If would be on the deck covering the area that is cutout for the skimmer. Look in the lower left of my avatar. It needs to be light weight so it can be easily slid aside to deal with the skimmer. Either that or I'll need to build in an access door. Can anyone suggest some ideas? I'm a little lost as far as building one and everything I've seen online is hideously expensive...like in the thousands. I just need something made out of fiberglass or plastic, 3 or 4 feet long and a couple feet wide that looks like a rock formation. It doesn't even have to be plumbed. I can add plumbing to get the effect I want. It would sit on the deck and hang over the pool edge.