Sparky,
We allow bent ground rods all the time at Dulles Airport. We have bedrock here too !!! Why do we allow it? because ground rods "stink" as grounds, and we use the Ufer for literally everything, supplemented by the rods. We do require that the entire thing be under ground though. Ground ring ??? probably cheaper, but I agree that a few extensions on a Hilti (Bosch ? Milwaukee?) would be the way to go, used that myself for the 12 years I was in business as well as the 20 years prior I worked for other people, the cash outlay may be somewhat steep originally, but Lord the time and effort saved makes it well worth it. I also agree that something may be built from materials laying around but then some irritating inspector would ask for UL listing, OSHA rating,... etc.. Come on guys, don't pretend you wouldn't.
