Saturday of Labor Day Weekend, there were a few sites available at 3pm. I got what I hope is the least nasty. Bless my van for being tall enough to generate its own shade.

What a cool discovery! You leave Route 160 just a little north of the bridge that takes you to Pittsburg/ Antioch and take a bumpy little road along the edge of Sherman Island. The road follows the southern side of the Sacramento River to the tip of the island, where there is a nice county park for the windsurfers. It's roughly where the Sac River meets the San Joaquin River, and it is a great windsurfing spot.