Man... from the name of the video I was hoping to see him time the tube to perfection. Oh well, still impressive. I bet that salt water played havoc on a small gas engine.
It is really cool, and I too was going to mention-
it's not foiling.
Now, lets see him pull a skier!
And the drive chain, sprockets, bearings...etc. And, technically speaking, it's planing - not foiling. ;-)
the way they edited that lead me to believe that big wave at the end choked the engine and the wave got him.