Just got mine out of the water today. Both rudder housings were shot! Having them both cut out and new bronze units installed. Rudders would move back and forth about an inch each! No wonder I was taking in water!!! I am putting another coat of Micron CSC on while it is out. I noticed that there is a hodge-podge amount of zincs installed and I was wondering what you all have done for zinc'ing your steel hulls? I currently have one on each rudder, and 4 on each side of the keel. Is this correct? More? Less? That is growth on the bottom. Not rust! lol Thanks!!!