I'm reluctant to cut out the floors in mine, but your project may give me the courage I need. The floor is pretty soft under the captain's chair. It is pretty solid other than that, though. Any way to strengthen a small area without removing the entire floor?

If your good with a saw I would say cut the soft area out. Just cut the top layer of fiberglass, pry out the rotten wood. Then epoxy the new wood to the inner layer of fiberglass. Then epoxy the outter layer of fiberglass back on that you first cut out. Next grind about 2-3 inches on either side all around the seem of your cut and apply a few layers of fiberglass. Then sand and fair as needed with filler then paint it.

floor repairs
 

Pete... Following your instructions and it's going good so far. Unfortunately I didn't cut a big enough area out the first time, but it'll work. I'll give it a few days to dry out, then fill it back in.

Underneath the topskin, I resined in random shape/size squares and rectangles. Two layers of 1/4 inch ply and cloth with an offset pattern on each layer of wood. Should have taken a picture of it during those steps. Here's where I'm leaving off for the day.

Good Job :clap:

Youre coming right along. Taking pics will allow someone else to do the same to theirs, they can go back to your documentation. Then you'll be a proud grandfather.:clap:

Yeah, but the "grandkids" will have be able to figure out that a thread titled "fish box" evolves into a floor repair documentation. Here's where I'm at after glassing over the repair. I think I shortcut the glasswork a little by only going with two layers of cloth. The first layer was about 1" wide strips... the second layer strips were about 2" wide.

I'm holding off on the fish box modification for now just to keep the amount of work manageable. I think over the next few years, I'll cut the entire floor out and do exactly what Capt Pete did.

Floors after painting
 

I used Interlux Brightside paint for the floor. In retrospect, I should've used the two-part like I did on the rest of the deck. It's way harder and more durable. Anyway, it turned out good. I used a no-slip additive, too.

WOW.....looking really sweet.

looks great! I'm glad it worked out for you.