Well, finally have removed the skin from all four sides. The bad news is I will have to replace the floor and subfloor in back, and install new skin on the front and the back. The original owner did a "fix" at one point that included replacing the drip rail with flashing and eliminating the overlap on the edges. Enter WATER! The good news is that none of the windows lead and the rest of the trailer under seems to be in pretty good shape. Still it's a major rebuild at least for me.
I scored a 3 speed with reverse Fantastic Fan for half the retail price. First part of reconstructing was putting in new oak (with aluminum to further reinforce) framing in the ceiling to make it VERY solid, and then installing the fan. Plenty of butyl tape, vulkem, and pocket screws. A big confidence builder that I can do this.
Also scribed curved portions of the corners for the back and front frame.
And then it started raining....and it still is.