Jana - thanks for the in on Mike's battery
shower... that's perfect for us. We've been spounge-bathing it.:o
Pete - My husband and I have been doing some MAJOR renovations to our 1974 13" boler
. We've gutted our egg back to the outside shell. From what I've seen on our egg, and what I've heard from the others here on this site, it shouldn't be too hard to install some plumbing for your soon-to-be-shower stall. Jana's comment rings true for our trailer too.... the only stuff under the floor was the fresh water tank, it's basic plumbing, and the frame rails. I say "Go For It!"
Jean - On the subject of shower door material. That corrugated plastic (looks just like cardboard, but plastic) can be pretty flimsy in larger panels. We have some safety signs at work made with that stuff and it's pretty bendy. You'd have to come up with some way to stop it from saging.... perhaps a rigid frame, or maybe more hinging to attach it than the regular two hinges?