So I am working on boat removing floor stringer's etc. I have area's around my fuel cell that are 3/4 ply and the remaing parts of the stringer's appear to be 1/2 inch ply. My question is this. Should I replace all the stringer's with the 3/4 or install back the way it was from factory. My thoughts are around adding weight with the additonal wood verse''s replacing back as factory installed. Also what are some thought's on fiberglass material. Anyone familiar with a dist. that has material's reasonably priced.

I am thinking 2 maybe 3 5 gallon of resin
Up to 45 yard's of some sort of fabric for tabbing and deck.
2 maybe 3 gallons of cabasol for the thicking of the resin for bonding stringer's to floor etc.

The amount of weight you add by using 3/4" (vs 1/2") is not going to be noticeable. Are you sure they are stringers? 1/2" seems a little thin for stringers. www.uscomposites.com/ for a reasonable supplier and good materials. For the plywood you can use a ACX exterior grade from Menards. 1708 is awesome to work with for about everything you are doing. Cabosil is cheap shipping it might cost more than the material.

Popular project this year. What kind of boat is it?

You know its a chapparal....