I have done felt inside tail dollies, the trailer wingtip hold downs and the mid trailer leading edge bottom rests.
Tail dollies I use heavy felt from McMaster-Carr. I get small rolls of different thickness. Usually 3/8' OR 1/2', depends on what is there. and attach with Weldwood contact cement. On the felt side, I do a heavy layer of cement and let soak in. Do another layer once dry and the surface you're bonding to and attach.
LE rests I sometimes use self adhesive felt from Amazon. Just get surface clean first.