Bill,
mate still pushing credability..
Still a long way between Phill's carbon/kevlar (foam?) Paper Tiger at $4500 AuD a platform and your $15,000 USD..

If one uses 11 meters of 200 gm twill per hull.. That is 2 layers outer & one inner.. Over a foam core.. Now a quick check of carbon prices you in the US can purchase 200 gm twill at $ 14.25 ..