I am looking into reinforcing my sj hull and was thinking of using carbon fiber because it is lighter but not sure on how much is needed. This post http://www.x-h2o.com/threads/50756-Carbon-Reinforcing says you can use 1 layer of 5.7 oz 2x2 twill. Another post http://www.x-h2o.com/threads/122426-Carbon-reinforcement says to use 2 layers of 11oz 2x2 twill. My other question would 1 layer of 1708 Biaxial be just as good then use black die for the looks?