So I'm finally taken the plunge and bought a "new" sail for the landy, and will be needing some advice on how to cut down.

This is the sail, http://www.windsurfing.kasail.com/archive/2000/kaos.html in a 6m.

I'm hoping to be able to measure exactly where that will come to on my mast of ~4.3m on the weekend. But just a quick question on luff curve. How exacly is the luff curve template done? Do I attach a rope to the top of the mast to the end of the boom and sheet it in all the way, then mark the curve of the mast on the template?

Cheers,

Adam.