14' trihull floor replacement

[cleanriver]

My 14' fiberglass trihull has a rotten floor. I need to remove the fiberglass liner and remove/replace the wood below. Looking for advice from those who have done something like this. Where exactly should I cut when removing the fiberglass? Right at the edge of the floor? Leave a lip? Or, should I make the cut under the rubrail and lift it all out, including the sides and gunwhale? Any advice appreciated.

 

[redneck joe]

The stringers will be rotten as well, quite possibly the transom too. Big project, make sure you love this boat enough to spend the time and money on it.