I would be hesitant in using either tape or spray-on material due to the abrasiveness of the surface. I have a tendency to slide in from trapping or hiking out and have lost skin from sandpaper like substances. My personal preference is for a softer substance that still maintains traction when wet. For side rails I prefer carpet due to the bungee on the trap wire, while on Hobie 20 style decks I prefer hydro turf.