I suppose Zinc is one of those things that looks bad means good. Once I had a Zinc that looks almost new after a year. Well I can't say the same for my prop. Had the prop & Zinc replaced. I must have used a China made Zinc. Now I make sure I get the proper Zinc.
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium