Sorry, Phil, can't help you on this one. We don't put anything on our prop. Just polish it clean every time we see it (the boat is usually out of the water a couple of times during the season.) Nobody seems to be giving a great testimonial to any of the "ridiculously expensive coatings." And I don't think grease stays on very long!

Same here, the prop is polished with Brasso until it gleams, seems to do the trick, for the West coast anyway.