RoyB wrote:
I carry the two step folding one but that isn't going to be tall enough to get up into the bunk bed I bet...

You are probably going to need something with at least four steps...
I did a search on google search and they have one of these RV BUNK BED LADDERs

It doesn't fold up however. These have the bent angles on top to keep in place...
more shown on google search- might give you good idea on what to look for...
Roy Ken
Thanks,
that telescoping model was exactly what I want. Found it on the Sears site for $99! Just a matter of knowing what it was called to look it up!