The top is Polycarbonate, 1/2" thick (1/4" would do).
The rest of the design is going to be in trying out various inlet nozzles. Once optimized, I can make a "fixed opening" top, and market it, but the extensive machining required here may put this block outside of most people's price range, and the performance isn't going to be much better than a White Water, if at all.
If there's any venture capitalist reading this: e-mail me
