Re: Boy killed by lightning in our anchorage, what would you do?
If you've ever read the publicly available papers on what "military grade hardened" electronics and systems are, you would understand why no one can afford to put them on a boat. Check out what is needed to "EM harden" a building, you'd have to build a submarine to do it to your boat.
Similarly, why not ground the rudder? Uh, because it is already "grounded" by being fully submerged in the water. Unless you want to run a cable down to an earth anchor grounding rod, that job is already done.
Lightning protection works frequently but never completely. Check out PolyPhaser and install one in your antenna line to protect your VHF. But it won't protect your antenna, antennas are sacrificial parts. If you want to protect the antenna, you submerge the boat before the storm. Honest, that's how it is done.