Originally Posted by Copprhead
Then, what would be the maximum luff length of the sail?
You want a sail that can have its luff set tight for upwind and close reaching sails
. You want a longer luff for broad reaching and running sails
. You want an adjustment block below the drum to be able to play the tension unless you are happy with just playing the halyard
Mind you still have to make the soft foil (at times it is just a length of non torsion line, at times it is a special gadget rope
like with some Profurls and Bamars) relatively tight before you start furling. The luff of the sail does not have to be tight though.