Power Kite?

I'd be really grateful if anyone can help on this, does anyone have an idea how many calories might be burned while flying a power kite? Either statically or in a kite buggy? I've never been able to find the answer, but it feels like a pretty good workout especially on the arms.

I found a rough answer here (in case anybody else was interested - I saw the question had a few views) Kiteboarding: Fun, Addictive, and a Great Workout | Health & Fitness Experts
Although thats for kite boarding rather than static flying it should be vaguely close, looks like I'd burn 980ish per hour at my weight!