Okay so I started thinking today (watch out!) and thought of this idea about a wave maker. What if you put small scale, inverted quarter round pieces of acrylic on the ends of a tank with a wave maker. That way when the surge went to either side of the tank it would splash water back into the tank. You could slightly turn the sides in to keep it splashing too much off to the side. Just an idea that made me wish I had wavemaker and a tank big enough for it?