Having heard about a mate getting hit recently by lightning at his anchorage, I've realised that indeed, lightning can strike twice, since it was the second time his yacht was hit.
As he tells it, the most recent lightning through his mast jumped to the railings and exited through the anchor chain into the water without cauisng any damage anywhere else. He has no specific precautions against a lighting strike. His mast is deck stepped and the rigging is steel, hull is full GRP with a bolt on led keel. Personlly, I have never had the experience nor I wish for it, but that does not eliminate the chance of getting a lightning strike. Reading up a bit about it never prepares you for when it happens either.
How do you protect your yacht against a lightning strike if at all, have you been hit and if so, were you onboard and what was the damage?