These things are really cool to see in person. I saw 2 of them in action over the 4th of July on Clear Lake, IA. We went out in the boat to watch for a while and my 2 year old son still asks about seeing “Rocketman” again. They did have people operating the waveruners, but it was only 4 feet deep where they were operating, so a nose dive would have been a big problem.