Hey Mikey, what would happen if you flipped the board over, then do some sanding/forming so that the board matches the contour of the fiberglass, then glass it in? It would be a little bit of work though.
My '89 has the same construction. The center section was deflecting, but wasn't rotted as your is. I laid a piece of 1 x 1 x 1/8" aluminum angle across the gap in the center section so that it spanned the bilge. THe carpeted section just lays on top of it. It's raised about 1/8", but it's not enough to be noticeable.
Hey, while you're down there you should be some maintenance on the rudder. You don't want to take all that stuff apart again. The battery tray is a work of art, some interesting fiberglass work was done there.
Last edited by Miss Rita; 12-06-2012 at 03:48 PM.