How many people have had a real discussion with their sailmaker regarding how they want the sail cut? I think you might be able to work with a local sailmaker on shape/etc but then your local sailmaker may not have a lot of experience with multihull sails so you are taking a risk there. The 3 times I have ordered sails no one ever asked about where I sail, how I sail, how much I weigh, etc. I have told them but I seriously doubt they altered anything based on my comments. Maybe it is just me...