I have a 1963
Airstream I'm attempting to restore to usable shape. I removed the black water tank to examine the floor condition and did find some soft spots and a hole. The hole is actually under the shower. These are the only soft spots I've found in the floor.
I've attached a couple of pictures, the first showing the soft spots and the second showing the hole. I'm assuming that the hole can be patched, but my concern is for the soft spots since they are near the edge of the floor. Anyone have any suggestions as to how I should proceed? I was thinking of using some kind of hardening/penetrating liquid that was sold at Home Depot for the soft spots.
The hole is fairly small and is soft around the edges, so, if anyone has suggestions about patching a small hole, please let me know.