That water thing would be way too much fun. I don't think a person would ever get tired of it, but your legs might get tired after a bit.
The Jet Ski is just doing circles, which is what they do after the Dead Mans Key has been pulled so the motor isn't reving that high.
So wonder how it works putting out that much pressure. I think there is one of those that
doesn't need a Jet Ski.
Be cool to blast around the lake without the Jet Ski.
Fly Board
http://www.flyboardsebastian.com/#!the-flyboard-kit/c1dlp
Over 5 K plus the cost of a higher powered Jet Ski.
The one that you wear on your back, (Jet Pack), and tow a little motor around is a serious Rich Mans toy, priced at 130K.
I won't be buying that one any time soon.