BayAreaKiteboarding.com

The weather was warm and sunny, when one of those heat streaks hits the city, everyone goes to the beach. The morning started out with east, offshore winds but turned to west as the typical onshore switch began to come into the bay. Crissy beach, the only beach on the bay in San Francisco, was filled with sun bathers. On the water, only a handful of kiters were out, only those with foilboards and with foil kites. A few tube-kites were out, but not many.

See more here:
http://kitethebay.com/foiling-around-san-francisco/

https://www.youtube.com/watch?v=FO-M0F-pX30[/video]