I've been restoring 13ft Whalers and most have heavy to medium oxidation. I've tried many approaches on the Whalers and on my 265 and the best method I've found is with a 7" rotary buffer (not dual action), a Lake County wool cutting pad and 3M Restorer and Wax. Brings the shine and color back amazingly well. If it's really oxidized, use a DA sander with 240 followed by 400/800/1000/2000 grits and then use the buffer with the 3M product. It will look like new. Don't use too much pressure; let the product or sanding grit do the work. You should wash the area to be refinished with acetone to remove residual wax before buffing. Good luck