My 30-30 Marlin has the hard butt pad and I guess I'm getting older, my shoulder just can't take shooting it much more than 5 or 6 times. Last time I did my shoulder hurt for two weeks. I did buy a shoulder pad and it works great but is awkward to use. I might consider putting a new permanent pad on at some point but for now was wondering about the slip-ons. Anyone know anything about these?