From what I've gathered about kitefoiling, what this guy is doing is a lot harder than it looks:
(Not to mention he's doing it pretty close to the beach so if that foil sinks...)

Steve Bodner on racing kitefoils: http://stevebodner.blogspot.com/2015/04/1st-kite-foil-race-postmortem.html

And now, for the other end of the kiting spectrum. Since comments were disabled, I was curious as to what the story was
Found it here: http://www.kiteforum.com/viewtopic.php?f=1&t=2366301&start=60#p673419