My boat was hit while in the water.

It has 2 external cast iron keels, one is bonded to the mast with a
heavy through cabin cable from tabernacle to one of the bilge keels. A
one drop per hour leak around that keel bolt was the only damage, aside
from 25 holes chewed in the aluminium mast.

The electrics were unaffected. The shrouds are not bonded except for
one green wire from port main shroud chain plate to the shore ground
earth.

The 12V return for all mast electrics is routed through the vhf coax
shield. Unplug the ae and all mast lighting is extinguished. Sounds
sloppy? It seems to work, despite lightning.

The vhf antenna is mounted on the side of the mast top so that the top
of the matching coil is about even with the masthead.

Encapsulated keels are a different matter, requiring a permanent
lightning plate or some temporary measure, which might not be deployed
if the boat is unattended at the dock, as mine was. It was plugged in
to shore power.

Terry K