I used Poli-Glow for the first time last spring - AWSOME!
I first cleaned the entire hull with LA Totally Awesome cleaner, which is T0TALLY AWESOME to say the very least. Just spray the cleaner on the hull, let is sit 30 seconds, wipe if off and all the crud, wax, grease, spider poop, bird crap stains, etc..., come right off. Next, I washed the hull with a mix consisting of two gallons of water, 3 cups Chlorox bleach, I tblsp Dawn Dish Detergent. I sprayed the mix on, scrubbed it with my deck scrub brush, then rinsed it thoroughly and allowed it to dry overnight.
The following morning, I began applying the Poli-Glow. You betcha this is a lot easier than waxing the damned boat every year. When I finished, you could count your teeth in the reflection of the hull. The boat was sailed 60 trips on Chesapeake Bay, then wintered on the hard at the marina with just a tarp over the boom and foredeck.
This spring, I washed the hull with dawn, no bleach, scrubbed it lightly with the deck brush and rinsed. After allowing about 4 hours for it to dry, I applied one coat of Poli-glow and it looked like new. No yellowing whatsoever.
The boat next to mine last winter looked horrible, and he had been using Poli-Glow for five years without ever stripping it. It had yellowed terribly, had streaked areas where the finish had worn off, and was really cruddy looking. I gave him a 1-quart bottle of LA Totally Awesome cleaner, he sprayed the hull, let is sit a couple minutes, then scrubbed it with his deck brush and rinsed. The hull was clean, no Poli-Glow remained, he reapplied it again, and it looked like a new boat. This was in April. The boat still looks fantastic, but the owner had some bad health issues and I think the boat has been abandoned. It's still on the hard.
Someone asked about Kiwi Grip in this thread. I can assure you that it is the best non-skid finish I've come across, wear like iron, relatively easy to apply, and I, for one, highly recommend it. However, I would apply Poli-Glow to any non-skid or any location of the boat where you will be walking. It is very, very slippery when wet.
Hope this helps,