I've used it on my Seafari for a couple of years and you can ask anyone that's seen it at the gatherings in Tampa, Long Point or Key Largo how it looks. Just answered a PM from Blue Heron who saw it in Key Largo last week and wanted to know what I used.
It really does work . . . MUCH less work than compounding/wax and much more durable. The cleaner in the kit appears to be a very strong alkali and leaves the gel coat very dull but clean! The coating appears to be some sort of urethane emulsion that dries to a clear film on the bottle spout and rubber gloves. The first couple of coats will look somewhat streaked, but after 5-6 coats it looks great. Can easily add a couple more coats after a year or so. Have to be careful with strong cleaners like Simple Green, etc, as it will streak/partially remove it if used full strength. As someone said, the surface needs to be surgically clean before you apply it, as whatever is on it will be sealed in for a couple of years after you apply it!