When we had our '96 Pace Arrow we found a soft spot in the bathroom floor and decided to just replace it. Our Granddaughter had left the shower running without shutting off the faucet so we had a water overflow. When we got the entire bathroom floor up we found it was all OK but was really sub 1/4" plywood. There was also a 2X3' stretch that had no support under it. I put in 3/8" marine plywood, added a brace where there had not been one previously and put down laminate flooring. I did the kitchen area at the same time and same mmaterial so it looked great.