This is what I've done. Pull as much of the carpet out by hand, scrap the surface with a paint scraper, puddy knife, then I use a wire brush on a side grinder. It gets real messy but it does the deed. Vaccuum at least 3 times, I then use a paint called Brightside or one called Easy Poxy. One is made by Pettit the other by Interlux. Apply by roller or brush, while wet, sprinkle sand blasting sand or Play sand, on the wet paint. The reason I use those two types of sand is because they don't have clay in it. After it dries, sweep the excess with a house broom and apply second coat. It makes for a sure grip surface, it adhears well,and if it gets nasty and ugly, just repaint. 2 quarts usually does an average boat, runs around $70 for paint and sand.......