This won't be good for everyone but I saw Mew doing it on Youtube and thought I'd try it out for the lols but I love it!
Basically he's made him self a silky sleeve to keep friction low between his arm and the pad. sometimes on hot days I get a moist wrist which clings to the pad a little and this works really well for me. It does make your sensitivity feel faster and I'm sure some will hate the concept but I thought I'd put it out there.
Mew playing Quake
I basically tried it out with arm warmers for mountain biking (thin silky material) which I have loads of. Works amazing for me. Only the bottom of my wrist comes in contact with the pad so I may mod it just to be a small wrist band or something.