I too am replacing my sole with teak & holly marine ply. I drilled my screw holes and then filled them with WEST System Epoxy. I am overdrilling the holes in the stringers underneath, and filling them with epoxy as well. BTW, I varnished the topsides of the sole, and coated the undersides and edges with WEST. Next I redrilled the screw holes with the sole pieces in their proper places. Now when I screw down through the flooring into the stringers all the (what would be exposed) inner edges are actually sealed epoxy. I am hoping this will solve the delam and deterioration problems that the old boards exhibited (after 16 years).
Dave Bartels "Quintessa" 29II

I also have had fun with those delaminating floors. I bought a 1981 C&C 32 a couple of years ago and part of the rebuild process was restoring the floors. They had completely deteriorated around the mast step, and had numerous scratches and stains elsewhere. Epoxy and filler repaired the delaminations and lots of sanding removed the scratches. Then six or seven coats of Epifanes Hand-Rubbed Varnish provided a great finish. After a season's use they still look good but I may add another two or three coats this spring.
ivan -- C&C32 - Lady of Shalott