Join Date: May 2005
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IF your marina is a HOT marina, depending upon the time you want to have your boat dived and zinc replaced, will depend upon HOW many zincs to put on. With 2 zincs, I go about 4 months, 3 zincs I can get a bit more ie 7 months and one will be dang near gone! ie literally! My max prop does not have a tip zinc from what i can tell, so the extra zinc is liked by a lot of folks in my marina, recommended by the local repair place at the marina to stave off excess damage.
The how much frankly will depend upon the marina etc!
Also there are some SS prop paints you can put on the shaft to stop Barnicle/mussel/shell type creatures from attaching themselves. Obviously do not paint the zincs or place the zinc over the paint........
She drives me boat,
I drives me dinghy!