There is a kid here on my lake that has one, I've watched him doing back flips on it, looks like something that would kill me in less than 3 minutes!
I'd find a way to hit myself over the head with it, or wrap the tow rope around my neck!
Today there's a float plane fly-in going on out back, I'm going to take the Prindle out and fk with them while they try to land.
This was filmed on my lake:
http://www.youtube.com/watch?v=uHBFcaI-hp4 The guy flying in that clip is Phil Lockwood, who designed the twin engine Air Cam. Phil lives about a mile up the street from me, and has let me fly his airplane several times, it's great fun, you guys all need one of these!
http://www.youtube.com/watch?v=Fv3FkwkAVYs