I'm getting ready to apply my spring coat of Sure Step soon. I not only like the products' non-slippery aspect, but the UV protection is very good too. Once the boat has been prepared according to their directions, it is very easy to apply using a deck brush. I have found that if I put a few coats on a year, don't have to do the 3-step process and the boat stays looking great.
Note: I've had a few turn to muck on me too. I think it doesn't like to be stored in hot locations or frozen. I'm only keep one on hand at a time now to be safe.