Hey Dan, I just watched the Addiction X video again. It looks from the stationary harriers and hovers like there is a breeze coming from the left of screen on the camera. That means a lot of that slowww high alpha knife edge stuff is being flown downwind! And the "knife edge walls" as well! And also the wall into knife edge harrier, the wall is into the wind the knife edge harrier downwind. All with no hint of stalling, falling out, or giving any grief!