I would imagine a Tybee 500 puts enough hours on your main to warrant a new sail every year anyways (average of 8 hours for 5 days, 40 hours just in one Tybee, add on training and a full season and I'm sure you are pushing the 150 hour mark in one season).

Just a thought, more of an academic thought. Wonder what you would change for a 'standard' mast on the sail, I woudl suspect the draft would change a lot, specifically in the luff area.

Java just kicking in, I find this interesting to think of having a 'distance racing' rig and main sail.