I don't quite understand everything I know about lightning strikes. My Winegard system sat at the old house from 1988 until we moved into the new house back in 2000 and never has been hit at either place in 27 years.
Mounted a second dish at the new house about 5 years ago not 75 feet from that original one and it's been a freaking lightning rod since, ie, lost my 24" HD TV TWICE IN ONE YEAR, LAN on my AZBox Elete, the gigabit switch it was connected to and the LAN function on the motherboard of my main shop computer. Also have lost 3 DMX741 LNBFs as well. Two years ago I put a ground rod in and connected it to that dish post and haven't had another problem to date??? Every time a storm comes up though I disconnect everything from that system just to be safe. Oh, and I hold my breath also as there are no more DMX741s around!