I grew up in Georgia where we had some wicked lighting storms. When I was a kid, we had lighting hit our house and completely blow out my exterior bedroom wall. This happened while I was in bed at the time. So I have a real respect for lighting. Might also explain why I don't hear so good now.
I live in California now and it is a rarity to see it here in the San Francisco Bay area. I don’t even remember it being discussed at my association meetings. If I did see it I would use the 30/30 rule that Garth mentioned unless we have a different policy.