Fizz, or lack there of

Should mention that I got "the man" down today to conduct a full galvanic check on the boat, as I have been concerned how fast we have been burning through zincs. She came up A1, with just the right amount of zinc and no bonding or stray current problems. Seems that with the huge amount of metal below the water (remember that bronze centreboard...) vs. the fact that we cannot over-zinc for fear of damaging the timbers, that we just have to accept that we will have small zincs that we burn through quickly.