I did a good mod to my OFF-ROAD POPUP trailer that kinda would well for you I think...
My work place redid their carpet through out the building and threw out all of the older 2-foot carpet squares. SO i rounded up a bunch of dark blue colors and dark green colors...
Ended up putting down the green ones under my two tent bed ends. The all still had the sticky backs so pressed down in place like a charm. In my case i had to cut a few to get around some metal work for the bunk end slides etc...
I felt a big different right away from drafts getting into the bunk bed areas.
Then I put down the dark blue squares on the main floor. Here again I had cut a few to get around the walls and things.. This also turned out great as getting up early in the mornings sure hated the cold vinyl flooring... The down side however is you never realize how much trash you bring in on your shoes when camping in the woods like we do. Showed up big time in the Blue carpet squares hehe...
That when i got the heavy duty front ground step from CW. This is a folding leg type but all folded up fits perfect under our first step coming into the trailer. This has a deep grate so everyone can stomp the heck out of it which their feet before coming inside... I also added carpet to the steps as well later on...
Roy's mage
Roy Ken