[klattu]

Wow...your is shinny!
I'm not going to outbright you for sure.
No photos today, went by so fast, and dark starts almost after lunch.
(We're on the far east side of CST)

Took out all the floor and seats.
Looks just right for planks...
A front to rear I-rib 4" c/c.
A slight curve, so will use thin boards.

My seats were plywood with laminated flooring glued on top.
After removing, could see that there must have been an aluminum panel there way back.
Plan to put some styrofoam under there, and seal up with a aluminum riveted seat bottom.

Too expensive to galvanize trailer?
A sailboat I bought in 1977 came with one, and it still looks like last years model.