I am in Alberton, MT, USA, building a park for Evergreen which includes a bowl for Jeff, who spearheads Montana Pool Service and raises vast sums to build public parks in Montana. So I drew a few alternatives for the bowl which preserve the outline but tweak the waterfall. Feel free to add a comment saying which you prefer, and why. Click on the photos to enlarge them.
Geth Noble Skatepark Design 