Your keel definitely needs protection. It's the must vulnerable metal below the waterline, the most expensive and difficult to repair, and extreme neglect can result in the keel falling off unexpectedly. You can attach one or two directly to the keel with a through bolt but there must be metal to metal contact between the anodes, the bolt, and the keel metal for it to work.
The problem with that is it's only a matter of time before water seeps in, contacts the bare metal in the keel hole, starts corroding the keel itself, compromises the fairing and finish layers, and weakens the conductivity to the anode, no matter how well you try to seal it. That's been my experience as well as others.
But that's not the only option you have, just the traditional and simplest one. I'm with CloudDiver on the side of keeping our freshly refinished keels 100% encapsulated by installing a remote anode connected to the keel through the winch, cable, and eye bolt that is easier to maintain.
It's not a new idea and is the method recommended for fiberglass encapsulated lead keels by a popular online Catalina parts retailer. It just hasn't been done much (at all?) before with swing keel C-22s but there's no reason it wouldn't work if installed correctly.
The problem with that is it's only a matter of time before water seeps in, contacts the bare metal in the keel hole, starts corroding the keel itself, compromises the fairing and finish layers, and weakens the conductivity to the anode, no matter how well you try to seal it. That's been my experience as well as others.
But that's not the only option you have, just the traditional and simplest one. I'm with CloudDiver on the side of keeping our freshly refinished keels 100% encapsulated by installing a remote anode connected to the keel through the winch, cable, and eye bolt that is easier to maintain.
It's not a new idea and is the method recommended for fiberglass encapsulated lead keels by a popular online Catalina parts retailer. It just hasn't been done much (at all?) before with swing keel C-22s but there's no reason it wouldn't work if installed correctly.