I used interlux interdeck for the cap and raised casting deck on my 20 and I like it. The cap was sanded down all the way so no previous nonskid was visible. The raised deck got painted right over with the same paint as the cap. Interdeck has fine non skid in it, perfect I think for the top cap, but I will ad the interlux additive when I do the new deck to get more coarse non skid.
