I should also note that everything is within Wouters posted guidelines except for the luff length which is just a bit longer.
The luff length as given by my was determined by the stiffness of the mast and what I know will work from my class 5 landyacht sails. It is not a hard boundery. I'm already thinking to stiffen up the mast to have it bend less and allow the battens to pop more easily in light winds. This desire coincides with the desire to use the same section for the beams and the bottom part of the mast.
How much is your luff longer ?
Wouter
