Here's what I've been doing on my 2-bladed MaxProp.
It keeps barnacles away for about 5 months.
After cleaning the prop with a wire wheel, I use spray polyurethane, applying 4
to 6 thin coats and let dry thoroughly.
Just prior to launch, apply Petitt's gray, spray paint [barnacle barrier] over
the polyurethane base.I launch in April, on the Chesapeake, I don't see any
barnacles until mid-September.Hope this helps. Pete W.Siren SongC&C30MKII
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