Pettit barnacle buster vs rustoleum cold galvanizing compound

I have used Pettit BB for years. It helps, but saying you never get barnacles at all is just not correct. I am also on Long Island. Boat is on a mooring. Prop and shaft typically will need some scraping by mid season to get the barnacles off. As had been said, location is important. Big difference between a mooring and in a slip.

Silverton guy said:

I get nothing, I'm on the south shore. And I use my boat. If you don't move your boat like a lot of people , we'll only an act of God will stop barnacles

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I use my boat. A lot. I am retired and only live a mile from my yacht club. I know many fellow club members who also use Pettit BB and their experience is similar to mine. It helps, but no way it completely stops barnacles. At least on boats kept on a mooring in our harbor.