That is a beautifull T .
Locally here in MI is the Gougeon Brothers West System epoxy ,-there are excellent books and resources available from them as well as expoxy and related filler and boat building products .Wood is a wonderfull renewable engineering -building core material.
http://www.gougeon.com/ Became interested in cat sailing by reading Reg Whites books on the early days of C Class cat racing and what became known as the Little AM CUP ,-their preference was wood const .
wow --just searched a copy of his catamaran racing book for 3.95
http://www.alibris.com/search/searc...mp;qsort=r&cm_re=works*listing*title Catsailors were building 150 LB A class cats from stressed skin ply and epoxy in the 80s locally and 18 sq meter class cats latter ,--the local builders/ sailors of them after numerous successfull A class designs went to foam and honeycomb core materials only due to the curve limitations 4 MM Marine plywood has ,--that is they wanted hull shapes that had flatter forward hull sections with sharper curves at the waterline than the ply material would allow though the positive aspect of ply was its inherant bending limitation forced a more uniform mathimatical curve as it folded up ,-it is almost impossible to fold up a slow hull shape due to this .
-It would be impossible to build an inter 20 type hull shape from ply for example with its pinched bow sections and very flat harder chined hull shape ,--but the Tornado type hull is ideal with deeper narrower hull and gradual math curves in hull shape .
--The Inter 20 weight is 390 LBs --the Tornado class weight is 376 ,-sounds like yours could have weighed 340 ,-the stressed skin ply version can weight much less or any 20 ft similar hull design can weigh much much less nowdays due to much lighter componants also being available --lighter hardware --sheets lines sail materials mast rigging boats rudder assemblies etc --
believe a 20 w ply const. could weight under 300 all up -possible 250 w spin and all .
Hope that helps inspire some to build .
thanks again for the pic
best regards
Carl Roberts
