My Jayco also has a sot floor in the high traffic areas.
I am considering cutting out the affected area from the top. Then I will add supports to the aluminum cross beams at the right height to have 5/8 ply level with the remaining floor. I expect I would need stiffeners under the ply where beam spacing is very wide.
I'll put a but block along the longitudinal seams and then fill and level the seams with a thickened epoxy mix.
after that I will put in laminate click together flooring which I have since I put that in while touring this winter to try to reduce the flex feeling.
Does this sound feasible?
I am too old to be working underneath the trailer to try to fix the floor.
Thanks