I can’t live without the following girth tightening tool from Dressage Extensions. It is the greatest for tightening girths when you have bad arthritus in your hands. I highly recommend it.
http://www.dressageextensions.com/ProductDetail.asp?KEY=1295
As far as before riding, I rub my hands in SportsCreme, which is sold in most large drugstore chains: CVS, Walgreens, etc. I also use it on my neck, lower back, or anywhere else I am muscle sore (it does not have the dangerous ingredient in it that killed some college athlete in a fluke incident I read about this year). I use tylenol extended relief or Celebrex on a really bad day. I can’t seem to use the Glucosamine/Chondroitin products for too long as they upset my stomach.