Thanks for your help here.
I have taken this subject, under the same heading over to the Sail Making Topic on advice from the Yachty himself.
Now Mr Landyacht

Where are we at with this sail? or are you showing me a way to take this Sail in these pages?
At this point I am of the belief that all Sail Makers have different techniques and tricks they believe work. Therefore I would imagine that sails will vary from maker to maker. Hence two sails that are apparently the same will be slightly different and perform differently. Though I have used Fleet Boat Dacron in my Hang Gliders of many years past I had very little input and nothing to do with the sail making.
Effectively Hang Glider sails a are similar, or were in those days, to LY sails only we used a 2 to 1 ratio HG to LY = twice as many as you guys and they had to be a pair mirror image

at 2 or 3 thousand feet, one was unquestionably relying on them to keep you alive. Some failed miserably! If taken past their design perimeters. Damn! I'm glad I never gave much thought to that side when I was younger

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Anyway point being I am relying on you to keep me off my side

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Are you looking at the sail with cut lines in mind or are you directing me.
Ron

