Wet-sanding an 18' kayak goes much better when done in the backyard. I sanded with 500 and 1200 paper, then used the R.O.S. with a foam pad-rubbing compound, then polishing compound. It looks more like a semi-gloss finish at this point.
After a whole lotta sanding & buffing, I decided that I didn't like the look that I was getting. I used the wax remover, sanded one more time with #1000, and went for varnish.