The RVators have a flyout on February 22nd:

“Tomorrow we have decided to head to Half Moon Bay. The weather has been awesome and I think it’s going to be a nice flight down there! We will be meeting on the ramp at the very south end of the airport (look for the RVs), in HMB at 11:30, or in the air on 122.75. We will decide where we are going to eat at that time. The alternate will be Petaluma, same time. Hope to see you there!”