Many career changes ago I was involved with a couple tackle companies where I attended sporting show events to sell and promote lures and depending on the lure design, topwater or diver, we were able to effectively demonstrate the action in test tanks. The design was simple enough to be transported and set up at shows, demonstrate several lures at once, and appealing enough to gather attention from public, simply put it was a better seller than I ever was. The biggest difference between what I'm seeing here is that we didn't move the water but moved the lures instead, let me try to remember the set up and explain. The first design was for below surface lures, basic fish tank 30 to 35 gal with a plywood top, mounted to the top was an electric motor with various speed setting that drove a fanbelt between two wheels mounted inside the tank on either end, on the fanbelt there were at least 5 bike rim spokes pointed downward into the water and a short piece of mono and a clip/ swivel to attach a lure. The second was for top water lures, same variable speed motor but mounted from the bottom in the middle of a circular tank made from plexiglass around 4 ft across, motor in the middle with metal spokes to attach lures like a lure merry go round. We ran these things with one electrical outlet (motor and a light) for days without problems, kept the water clean with a simple fish tank filter and a common fish tank clearing chemical, packed them up and traveled to the next show. I hope I've made sense and wish I had a picture to show but I don't so if you have a question just let me know.