This seems like a sorta silly question, but here goes. My new pack has a pair of loops sticking out of the bottom to attach a pad to. The thing is, they are just a pair of loops. If the pad is attached just by hooking straps to it, it allows the pad to swing around alot. Generally speaking I know that something flopping around is not a good thing. I have came up with a way that runs part of a strap through the loop holding the waist strap on the pack. The problem is that makes the pad rub against the seat of my pants, which I also assume could be a problem. What is the best way of attaching a pad to a pack like this?