When under sail, the consistent and stiff westerly wind in this area will heel the boat to the gunwales. With good trim and the Genoa unfurled, 14-17 knots are typical. I've done a round trip in 10.5 hrs. Not tacking, of course, on the return. We would run the spinnaker, and the mainsail as a staysail, on the return. The boat did 12-14 knots and the breeze for the crew was dead.
http://www.ndbc.noaa.gov/station_page.php?station=46026
SF approach buoy data for the last week. Highest windspeed 14 knots. No 17 knot boatspeed for this guy!