We don't use the upper bunk for sleeping, since we like the lower better.
That leaves the upper bunk for storage when the pop-top is open. Of course
this obviously won;t work all of you but for the two of us...

I removed the upper bunk fold out front section. Theres only 4 screws holding
it in. I then added a shelf attached to the pop-top. The shelf is made of
that new wire closet rack stuff they sell. The shelf is attached to the pop-top
by wire cable so it folds when the pop-top is closed. It hangs a few inched
(opps, typo) inches back from the top bunk edge and about 16" above it. It
gives us a lot more room for storage while camping. I put the wire shelf in
upside down so its back lip is up, rather than down. That keeps stuff from
pushing off the back.

If you want more details let me know.

Richard 85 Westy