Wind Magic speaks ably to what, for some, is an irrational fear. The only competitor to it is the fear of striking a half submerged container. I place both right up there with the chances of hitting a cow on the interstate. ("My insurance company? New England Life, of course. Why?")
I would make one cavaet though. Those who say that lightning does not strike in the same place twice are naive. Through my work I see homes and areas that are much more prone to repeated ground strikes than others. If you are sailing in an area, inland, that has that predisposition I'd take it into account. And, rather than relying on electrical cable routing, I might find some work in the boathouse that day.
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.