I figured I'd start a different thread than just time spent cleaning for this irritating subject. My boat's been in the water for at least five months now for going on it's fourth season. The hull and the bottom are polished and sealed every spring, no problems there.
I did use Woody Wax, which is specifically designed for non-skid and decks in general. It does indeed work, giving a shine and traction, more so than not using it. But I used this after three seasons. The deck now is a bit dull, not really chalky, but it will get there.
For those that have a shiny deck, one that you can walk on for anchoring without falling off

, what do you use? I was thinking about polishing the deck with a random orbital polisher, then applying the Woody Wax.
Anyone have success in maintaining their non-skid and decks?