[oldbluesplayer]

Hey BlueSeaCraft - it would probably help us some, if we knew what size boat -

so I'll give you what I have, based on doing a 20' Seafari, with a 1-1/2 inch thick transom, from the outside, and noting that I replace the core of my transom with plywood, not once of the high tech core replacement materials (which I'm not directly familiar with, but believe they are considerably more expensive for material cost, from what others have said in here).

Three sheets marine ply, 1/2" (others have done 2, 3/4")

two gal west systems epoxy, thickener, hardeners - both std and slow (working in the summer sun, wanted to extend my lay-up time

several yards of cloth, some matt, and some woven roving

mixing cups, stirrers, gloves for the hands - all one use throw-aways

(I won't add in the beer cost)

something on the order of $600, and alot of my time - which I don't regret - I had prior experience with fiberglass work, and now I know how this one is put together.

I can't speak directly to a pro cost estimate, but I'd guess somewhere between $2K - 4K - I'll let others speak up on that.

hope that helps some.

Bill