Re: online zinc kits
The short answer is YES. It really depends on what your boat is made out of, what is exposed to the water, the elctronics you have onboard and how it is all wired...stuff like that. Zincs are cheap and easy, if in doubt, add it. As a rule of thumb: if you have VHF, add it. Also, they might be one of those things where the cost of shipping the weight offsets any savings from buying online.