Anyone removed carpet in older boat- Have ??

I have a 2000 MB DD and have contemplated removing the carpet and either installing new or replacing with a boatmat style inlay. Just wondering what is underneith the carpet? I assume there will be a whole lot of glue and fiberglass over top of some plywood. The carpet isn't really that stained or anything just worn down from being 11 years old. Even if I go with the boatmat type cover I would like to remove the carpet otherwise it would just stay wet underneith which means I would have to pull everything out everytime I was done for the day. There are a couple spots that would be pretty tricky like the dog house itself. Just trying to figure out the best way to go about this. Would I need to sand and recoat the floor with a fiberglass resin or deck seal type material? I can get a really good price on the boatmat material so I'm not as concerned about the price.