looks like u reincarnated 15 years later into the same windweapon debacle. none of those youtube videos show smooth jibing. in fact, all the jumps are crashes or uncontrollable, out of straps, airtime. same shit as windweapon.
actually, with windweapons, they got some huge lofting airtime....
Rumors of its death have been greatly exaggerated - check it out here - the Kitewing Wavewarrior - with video available on youtube also.