Have you put the wax back on yet ?Sounds like I'm obsessing with the bleach, but two week ago I cleaned the whole upper deck non skid and cock pit with a foamy bleach. One small spray bottle, a soft scrub brush and a scotch pad/sponge. Because it is foamy it doesn't run or splash. It only took me a couple of hours and I was amazed how all of the stains and crud wiped off. I did a quarter of the boat and rinsed with the hose. I hate cleaning the deck because it is so tedious but I didn't have time to get bored or discouraged because it went so fast.
Good stuff. It workdTry Totally Awesome (available from the Dollar Store & Walmart). This stuff is great for non skid. You can try it with or without the powerwasher.
I saw another boater powerwashing a couple years ago and was so impressed I purchased the same electric powerwasher from Home Depot. Less than $200 for a 1900 psi unit. The first weekend I used it on my boat everyone on the dock asked to borrow it to do their boats when I was finished.Has anyone tried powerwashing the non-skid to get at those pesky corners and stains? I've tried everything else, but I don't want to blast the small diamonds off the deck. Advice appreciated.