Yes, that is a problem with ground rods alone. Might be it's part of the reason for the bonding to the homes ground too. Plus less chances of arcing over I imagine. I saw that link Jea48 posted and couldn't find it again. Thanks for posting it. Good info. I guess they've learned a lot from those experiments, with shooting those rockets up into the clouds in Florida. A lot of those skyscrapers have some big thick steel plates under them, where it's nice and moist, plus all the contact with the moist ground must be the reason they take all those strikes, without any problems. Still better odds with a wire with a ground rod will direct a lot more toward the ground, instead of coming straight down through the roof I would think. Years back before cable TV, our roof antenna was on a tripod, with a 4 gauge solid copper ground wire,and it still had me moving away from that end of the room below it, just in case, during a nasty storm. Another link to read. [http://www.ece.ufl.edu/announcements/news/2003/lightning-powerlines.html]