pirate252, do you really mean Platinum "polish"? or do you mean "wax"? If your dad taught you like my dad taught me, then you may use the terms interchangeably. In Autopia, we don't. Polish is an abrasive product that removes/reduces scratches/swirls/etc. Wax is for shine enhancement and production. SMR is merely a mild form of polish. So if you're using a polish (like DACP, IHG, 3M compounds or Finesse-It, etc.), then yeah, SMR is a good last step -- after which you can wash again and move on to a wax or sealant.