Water damaged floor. Repair tips?

Sorry to say this but it's often said on the Craigslist auto forum....CLIFF IT. The problem with rv's construction is that the floor goes down first and then the walls are set on top of it. The walls are probably not much better as the water damage most likely came from the roof down. I wouldn't mess with that, junk it and buy something without water damage. I did an old Jayco project that was in far better shape than that and I basically stuffed the whole thing in the back of a Chevy pick up and took it to the dump. I then reinforced, cleaned and painted the frame and started building a new trailer. It was just a winter project but I would never do it again. It almost makes me want to puke just thinking about all that work.

Maybe you are just joking with us? Are you?