Thanks everyone... I'll probably go the Home Depot accordian door route. I just looked them up and, like people said, it's about $50.
To answer a couple questions:
Nope, can't clear the booth seat so the door can't be opened all the way and pinned behind the slide. There's also not enough clearance with the knob so I'd have to cut a hole in the wall or get rid of the twist knob and go with something else.
I really need to have the bathroom when traveling.... well, "I" don't but my 4 kids and wife do. If I have to find a public bathroom everytime someone has to "go" I'll go broke buying bags of Skittles at all the Quckie Marts.
I need the bathroom at home since I use my trailer as a refuge from the previously mentioned kids sometimes. I often need an hour or so of laptop time to finish up my day. Once I go inside the kids (twin boys that are 2, daughter is 4) won't let me work.... at all A big part of the RV purchase was having a place to hang out that's cheaper than the pub down the street, to finish my day.
Your problem is one of the reasons I won't buy a trailer with slide outs.
Have you ever thought about shopping around? That's why they make trailers that are fully functional with the slides in so people can use them without putting the slides out while they're on the road. We can use anything in our trailer with both slides in.
2010 Rockwood Signature Ultra Lite 8315BSS
2003 Chevy Silverado 1/2 Ton Extended Cab