Well the floor is mostly finished.
I didn't think to take any pictures of the jacked up frame from the outside. everything was moving quickly (well not quickly but frantic) and never crossed my mind. Besides I don't like tempting fate too much.
Still need to add the membrane which will require jacking the camper off the frame one last time...hopefully only about 1/4 inch instead of 2-3 inches. Afterwards I still need to button the camper up, and re-secure everything to the trailer. I want to add some butyl tape around the wheel wells, the door and threshold and anywhere else I can place some. Still quite a bit of work before I can begin adding the innards. Hopefully by the end of the first week in July that process can begin.
The first image from below and showing the new paint job. The runs were from the original paint.
The second was the bottom board phase (1/2" treated ply). The entire frame/shell was jacked to allow sliding the planks in from the side. Note the bottle jack in the rear corner.
The third shows some of the addition supports added and the foam being placed. Treated 2x4's were secured from below except where the tanks required screwing from the top. Not ideal, but still additional support.
The fourth is the inner floor phase (3/8" sanded ply). Just the shell is jacked up to allow inserting the planks in the same fashion.
Very dicey and not for the faint of heart. The 4x4 in the pic was one of two jack points (four jacks). This one was through the wheel wells. the camper was currently down and placed on shims to keep the shell sitting flat when down.
The fifth is more of the same. The 2x4 running through the front was the second jack point.
The final pic shows the final board to be placed. The 4x4 (not shown) was moved through the two storage panel doors to allow access to the front for the final plank. That one took a while to figure out and be confident of the out outcome.
All in all it appears to have worked out well, but turned out to be VERY time consuming. About 43 hours in all to replace the floor in its current condition, which is still technically incomplete.