On Jan 28, 10:02 am, RW Salnick wrote:
I was at the Seattle Boat Show yesterday, and saw for the first time a
product called Propspeed (http://www.propspeed.com/). ...

It's very popular in New Zealand. On a haul out in Opua I had one
prop in the shop so put Propspeed on the available prop and then put
lanolin onto the other just before launching. Fouling seemed
identical on both... The word is that it works well if you spin the
prop often, but if you spin the prop often grease works too... The
other issue that seemed important was preparation of the prop. A good
etching agent and attention to the timing of application seem to be
critical.

-- Tom.