I do not put any anti fouling on the propellor and am thinking of ways - quite apart from diving on the propellor weekly which is sometimes left undone as a result of a hcetic travel schedule - of preventing marine growth. It is very rapid here in Singapore - one month can see extensive growth which is a catalyst for further growth. I just hauled Maybritt and the propellor was beginning to resemble a coral Reef.....
I have been thinking of using neoprene socks similar to those used on power boats and as sold by West Marine but I may not now get round to that for some months as it is probably best measured/fitted when Maybritt is next out of the water.
A mate of mine suggested using a black bin liner over the propellor but I do not know of anyone who has used that system and I am far from convinced that it would work - does not marine growth occur even in virtually no light ?
I wondered whether a coating of waterproof grease might help renewed everytime after the boat is used but perhaps marine growth would then be even more vigorous or perhaps it simply would not be very effective.
Does anyone have any (useful) comments to make or helpful suggestions apart from Dive Dive Dive that is !?