Mysterio, unfortunately i am not the right person to answer your questions, Jeremy (surfcitycatamarans.com) does this for a living, and Mike has been building his boat from scratch.

These guys have MUCH more knowledge than i, and you should ask them to respond... I just break em/ bring em to my 74 year old repair guy and go break em again... however this year i started to learn how to work on glass/epoxy..