He did a sample area for me. He started with a solvent wipe that removed some dirt and nastly little mold buggers. He then used a power buffer and 3M HD compound and buffed it out well. Next used a restore fine compound to polish and finally a coat of Wintex??? hard paste wax to protect. Looks good.
Possible concerns are that he used the same power buffer sheepswool pad for all the steps. (inbetween different compounds and wax he 'scraped' the pad with a metal tool while it spun which seemed to remove the caked on material) Not ideal as a new pad, but probably OK??
Also, used a lot of 3m compound but seemed to be rather light on the paste wax... I know you don't need much but can use use too little???
Haven't seen how he plans on doing the molded non-slip (my personal cleaning nemesis).