We used Interdeck on our cockpit sole after removing aged glue-on non skid which left smooth gel coat behind. Once the glue residue was scraped away a light sanding was all we did. Two seasons later it looks good and grips well.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)