If it were me, I would run away as fast as I could.
There is floor repair, in addition to possible frame repair. I would be more concerned with the floor and walls and other things if wetness was seen and felt on the inside of the trailer. The water is coming from somewhere. That means pipes or seem leaks too.
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!