Well I would like to put in my two cents on the pro-polish.I bought a new Searay 320 in 2004,The Searay site promoted Yacht brite products.I used the Boat wash, serious shine and pro polish.
I am located on the upper Mississippi,so short summers.Boat stored indoors in the winter,so I did as much as I could to prevent UV damage.My regement was a good wash every week,twice a year using pro polish,and touch up with serious shine on isenglass ,dash and anything else I wanted to shine up.Boat usually was one of the cleanest ,but i noted this last year the hull and deck appeared chalky.My expectation were that using the Yacht products would have delayed this a few more years.I may have expected to much.
I recently went to the Searay dealer show in Florida and brought this up with their staff.They replied that they no longer use the product,but have switched over to 3m products.
My plans this year or suggestion would be to use Yacht brite pro polish ,and place a wax cover over it.I plan to use Collinite 885.It was ranked number one in durability by Power boat.My reasoning is Polish molecules are smaller and will fill the pores better,then seal it with the more durable wax.
I do not know this to be the best but I may try it soon .If others have a better suggestion I am all ears.
P.S.I did like the Yacht brite products,ease of use and shine,I just dont think it protected the fiberglass.My 2 cents.
Commonmedic