I don't think I'd want to chance it. And, as far as lightening strikes being rare? Where? When I lived in OK, lots of livestock and people got hit by lightening, all the time. Not rare at all. I had a squad of 8 basic trainees under a tree get hit. My veterinarian lost a bunch of horses.
I've actually had my house hit by lightening four times, four different houses in three states. Last time, it killed a tree, burned up the garage door opener and some other electronics. The time before, all the electronics, including the TV satellite and cable system. Once, it got the whole house electrical system.
i don't think it's all that rare to get hit by lightening, although I think people are pretty cavalier about it, especially if they've never lived in a state with killer storms.
me, I'm not diving in a thunderstorm, unless I'm stuck in it. Recently, we were doing dive master training and a storm blew up suddenly. The guys wanted to stay out. Of course, I said I'm going in. I guess I'm the wimp, or, the voice of reason, whichever way you look at it. My instructor and the other student are AZ natives without much storm experience.
Minutes after we got out, we were experiencing flash flooding and 50mph winds.