Carl, and Rolf, thank you for the compliment. (about my old T)

It's so long ago now that I can't remember the exact weights involved, but I think the max correctors figure was something like 5Kg and we needed about 8Kg so because the boats were weighed with all gear on board we had a pair of centreplates specially made with LOADS of reinforcing that came out so heavy that when fitted we were able to put only 4.5Kg of correctors on the main beam

One other thing I would agree with - my boat COULD HAVE BEEN BUILT LIGHTER even back in the early '80's! So with modern techniques, knowledge etc. it should be easily possible to get a 20ft cat under 300lbs if built in ply.

As with everything the trick is to make it hold together