SW of Mindego Hill
Take Alpine Rd W of Palo Alto, on the way to the coast, just a coupla miles W of where it crosses Skyline Dr. There were some pretty good sites on the ridge there about 20 years ago, if it's not too built up now. Also, have you considered Big Basin? Today, I would either go out to northern Marin or down south to Pinnacles Natl Monument
You do realize that if I still lived there, and if the site were still dark, there would be no way I would tell you about this...