That will work, just make sure you bog up the area where the wear is first otherwise the protector will just mould into the worn area. You'll need to sand it flat once you've bogged it up so you obviously need to take a little care here so that you don't damage any of the art work on your playfield. I'm not sure which brand of protector this one is but I've used the Cliffy ones before and once there installed they sit very flat and don't impact on gameplay at all.
