We have acquired a 88 Coleman Willaimsburg. My question is...Is there any such thing as Pop Up Camper bed sheets? I am a freak about sheets and having them nice and neat. I don't want to use sleeping bags if I can keep from it. The pup is away having some repairs so I am not sure of the exact measurements of the beds. What do you use? How tight are they? Do they come untucked at night? Looking forward to Summer and our first trip in our pop up.