Yeah, I did it years ago. Never did the whip powered, but did wind fly. Didn't do too much of it and never tried when it was less than WINDY. Also, didn't try any square corners. Never thought to. Quite frankly, after the amazing feeling that I was doing it, there wasn't much fun in it. And I couldn't do overhead 8s. And decided I didn't want to either.

Having a somewhat dark sense of humor, I convinced a flying buddy, who flew mostly combat, that I'd done it with a combat wing as well as a profile (my Magician 35). Some weeks later he called the house wanting to come over and kick my .......

I think the tough part was launch if I remember correctly. You need someone who can give it some speed but not pull the handle out of your hand.