For a code 0 I would think 400mm in addition to what was already there was rather a lot to add?? Extra cloth in the leech dont add much performance wise in current kites in my opinion.
Agreed that extra on the leech is not desirable, but the only way you can use the benefit of a relative straight luff code zero while being f16 compliant.
Perhaps oversize the foot to compensate and get a straighter or even hollow leech? Have not played with the numbers though.
Dont forget the 75% rule is relative to the foot...the longer the foot the longer the 1/2 measurement!
