Thanks for your reply,
I want to use Fromula still as I have also 12m sail, and wind statistic are poor for most of the time. I was courious if 137 2013 will be working with 10m. I uderstand 7.6 and 8.6 should be allright, but how`s about the 10m is it too big?
And will I have more control with wood then with carbon?