I second the Pettit spray below. This is bar far the best
solution I have found for the prop.
I also fell victim to the claims of Propspeed and completely wasted a couple of
hundred dollars in Grenada. It barely lasted 3 months.
- Cream Puff - SM2K - #275
cruising - Vista Mar, Panama
I tried PropSpeed 3 separate times. (They certainly are
proud of that stuff!)
I had the same results as you. Very unsatisfactory. I tried
everything, and finally found a decent solution.
I use the spray. About $35 US for a can.
I use the whole can on my underwater metal, usually 3 or 4
coats on the prop. I burnish the fully dried paint with a heavy duty scotch
brite pad, to expose the zinc (not on the edges, but the flats of the blades).
In an entire season, not a single barnacle or growth of any
kind on the prop. And the paint stayed adhered to my stainless prop. I don’t
burnish the other underwater metals, and do have some growth on them, so the
burnishing is important. I spray the prop once a year.
Looking for advice- I'm doing a bottom job in 6 weeks. Last
year I used Propspeed on my Autoprop and 6 months later there was no evidence
of it.....the barnacles however were flourishing. While I enjoy diving I like
it better without a scraper in my hand. Given the cost of Propspeed, 6
months is unacceptable. Would love to know if there's something better out
Tom and Kirstin
SM 2K 422
Bocas del Toro Panama