I stepped into boat ownership this summer with a 2014 Hurricane Sundeck 187. One previous owner who left it sit in the slip most of the time according to the dealer. Now that my ski season is over, I want to wash up the boat and give it a good wax job. I spent a few hours reading online and came up with a plan two wash the boat throughly and then apply 2 coats of marine wax. Then I read about polishing the boat before waxing. Is this a necessary step? What happens if I just wash and wax?