I just got my boat back from the yard after they did numerous repairs. One of the things they did was wax the whole thing. Now, the hull looks great, but after I washed off the dust, the deck doesn't. It has this gray, cloudy look to it, when it should be bright white. Even heavy scrubbing with boat soap doesn't seem to take it off. Any idea what this is? It didn't look like this before the wax!