The back rot was a little daunting for a beginner, so we moved inside. The original flooring was likely asbestos based, so we wanted to get it out.
After fully removing all the tiles, disposing of them in sealed bags, we washed down the floors several times to make sure there were no potential fibers remaining, as the kids still enjoyed playing inside.
Finally, here's a cute photo that was part of the trailer when we bought it. There was a time when every family had a trailer like ours, and they all explored the country together. This is what we hope to do with our family some day soon.