The rocker covers really do not polish very well due to the poor composite aluminium used. There will always be pin prick surface holes but if you must go down this route, do not try to remove the embossed letters, there will always be a shadow where they were removed. I speak from personal experience and trying to talk others out of this too, who regreted it afterwards. I guess it depends on how good you really want it to look. Your best option may be to get it painted with a good paint, by someone who can paint properly in the colour of your choice. Powder coating is o.k. but it will crack where the bolts go and don't forget to either plug all threads prior to any painting/coating as it's a right pain chasing the threads out afterwards.