I was in a slip this past season but, I was on a mooring the previous year. The zincs were gone both years. There is quite a bit of seperation in the mooring field and I was some 200 yards off shore. I think the zincs were tightened properly so I don't believe that was the problem. The marina is going to check the bonding system? I have never heard that term before can anyone shead any light here? Any suggestions on isolating the source of the leakage if it is in my electrical system? Thanks