Well, I drove around Boise to about 10 body shops to get them to look at this. Only 3 even were interested. The other 7 said 'we don't do that kind of work any more'. Hmmm.

2 of the 3 estimates were to clean it up, cut out a portion of the inside wall on the rocker panel, and weld in a new sheet of contoured 16 gauge. Seems reasonable. 10 hours estimated labor at $50/hour, plus about $50 for sheet metal. Both estimates were $600-ish and they said they needed the car for a day.

The other shop insisted that welding was unnecessary, and that they would 'glue' (their words, not mine) metal in to cover the hole. And that would be as good, or better, than welding. I pressed this a bit, but the guy was adamant that was the way to go. $200. But I think I could probably do that myself.

I think I'm going to go with the $600 weld job. The more I drive this car, the more I like it.