Had an tared up old sail and tryed to remake it for my mini-quad.
I used it before in a windsurfer set up ,but the sail was to full and to much curve in the mast.
For the mast sleeve with a lighter curve will flatten the sail and marked a line .
So I take of the mast sleeve to cut the sail.
Sewed the sleeve with batten protection back on.
Just need to seew the bottum end of the sail back on.
An broken WS boom started a second life as curved boom, thats why i did'nt cut the bottum of the sail.
Just have to figger out to fit it this all in with a center pull and crocket downhoal