So I brought home my new project, a 27' Concorde and we were on it today
doing cleaning and pulling out everything that looked rotted or unnecessary.
For the most part everything was really good, but we decided that it would
be best to replace the old cabin flooring as well as the deck.

Some things we found:
1) The current floor used 3/4 inch plywood with contact cemented on
vinyl flooring.
2) The stringers and floor supports are all in good condition (no rot
anywhere but in the deck material and cabin floor).
3) Keep in mind the back deck is about 9.5 feet wide and 11 feet long.
So it is pretty big.

My ideas:
1) For the deck I am thinking of using 3/4 inch plywood (A/B not marine
grade) and then encapsulating it in fiberglass then adding a newer style
gelcoat with non-skid on the top side.
2) For the cabin floor I would use the same plywood encapsulated in
fiberglass again to prevent rot, then carpet over the floor or possibly do
the same treatment as the deck.

Questions:
1) What have you more experienced guys done in my situation?
2) What makes the most sense? I also thought about using Divinicell but
that seems an expensive route, then again it might prevent me from doing
this again. Opinions? Other options?

Also, I am not trying to start a debate on Marine grade vs. high grade (min.
void) plywood. I understand many people feel extremely strong regarding
this topic, but I do value any opinions or experiences. I don't want to do
this again in 2 years.

Thanks!
Mark.