I use the hangers that I get form the dry cleaners. Â The clamp type hangers never work for me, and my pants (none have cuffs) simply slip out and fall on the floor.
Sounds like you need different clamp hangers. I have a few kinds that all work with various uncuffed pants, cotton, worsted, flannels, thin, thick, etc. Some have felt stuff inside, some have grooves, and if you wanted to get inventive you could stick some foam rubbery stuff in the inside.