I''d like to hear some more opinions about this. I have a Cal 28-2 with the original dacron sails dating from 1986. I race in Marblehead, MA with very light winds most of the summer. I got smoked by most boats in my class (PHRF Class D) but didn''t care cause it was my first season and was learning the ropes. Next year I want to be much more competitive, and most people (and there are a lot of good sailors around here) tell me that new sails will make a BIG difference. Are they wrong? I''m making the same choice between dacron and mylar. While there''s no question that dacron is more durable, can I assume that a laminate will be a big advantage in light winds? Thanks!