another thing: The start and finish points are the same. When he starts, he goes off horizontally. If you stop the video just before he sinks. You can see to the bottom of the lake, and there's no structure within 10 feet of the landing stage from where he took off. I think you need a new theory. What about: He's suspended by a cord from a big crane that's outside the camera range; or he's wearing iron underpants and there's a big magnet holding him up; or better still, he got abducted by aliens, who wanted his seed. They were so grateful when they got it that they gave him an anti-gravity device as a present. Now he's using it to make a living by conning people into donating to his fake water-bike business.