IMO don't do that. Don't know what would happen down under where it is on the rails.
When the slide is out, from outside under there you can get at the long outer-lower edge of the round-down the silde bottom rides up on. It could be all grungy there and that is what might be getting on the carpet. There is a seal at the bottom of the slide I suppose to keep road gunk from getting up in there, but ours went bad after a few years so I wouldn't count on that much.
With the slide just starting to come in when it is high up off the floor you can see if the front of the slide bottom is dirty (you being inside the trailer). You can see the rest of the slide bottom when it is out (and you being outside).
There doesn't seem to be anything under there like rollers. I wanted to remove the bit of carpet along the edge of the floor by the hump and go all tiling, but Komfort told me to leave a little (2-3 inches that would be hidden under the slide's carpet flap) carpet there so the slide would go in right and not scratch the floor.
Of course I ignored that, and sure enough there are a couple of scratches on the tiling. No idea what can be doing the scratching. It is all a limiter on any idea of doing a reno with nice wood flooring and no carpet (with dogs it is better with no carpet) and there is no room for additional floor height anyway.
The original tiles by the doorway and in the kitchen were stuck on the floor OSB and getting them off damaged the top of the OSB, which is really difficult to repair to get a smooth top on, since many fillers are wet and just makes things worse. And naturally there is no height allowance for just slapping a new wood floor on top of the damaged OSB.
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.