Aurora Sure Step. It was discussed in another thread recently, and I complained about it's durability. I stand by that. I still say that it DOES NOT LAST LONG, but at the same time, it's easy to apply and does offer some grip. I doubt it has more than an oxidized surface has, but it's distinctly better than traditional wax as far as "gripability".
I actually applied some this morning. As you know OJ, the 400DA has grit-style non-skid on side decks, cockpit and swim platforms, and a shallow molded-in pattern on the cabin top. The downside is, it's not aggressive at all. On the plus side, it's very easy to maintain, doesn't trap dirt and because of that, with a little TLC, looks great even after more than a decade.
I apply Sure Step on the side decks and platforms, but the cabin top gets the real stuff. I want that to shine, and while it IS a slip hazard, there's never a reason to go up there underway, so I'm just careful when I wash it.
BTW, George has a PC. It's a MUCH bigger boat than an SS. Friends of mine have a boat just like his, and we've had them side-by-side. They're almost exactly the same size, with the Formula being a little longer, and the SeaRay being a few inches wider. Great boat.