If you're in Hawaii, how about just putting in there "stay under short trees" in regards to lightening? For most of the island (hawaii) I saw, other than the volcano, trees were everywhere. At least short trees have less chance of catching lightening. Another thing might just be to teach the parents about lightening safety and have them practice at home with the kids. You folks don't have a shortage of rainfall!

Just a thought, and I have no idea if it's true, but would sitting on a fallen log help decrease the chances of a lightening strike? wood tends not to conduct all that well?