With its impenetrable fog, gusty wind, and rough currents, San Francisco Bay is known the world over as one of the most challenging places to sail. It's for this very reason that the San Francisco Sailing Company's Sailing School has set up shop here: "If you can sail the San Francisco Bay," they declare on their website, "you [can] sail anywhere in the world." The seasoned instructors instill what they know thoroughly and quickly. In fact, after completing just two two-day classes, students at the school earn their ASA certification and the confidence to sail the Bay on their own. The school offers loftier training, as well, providing the know-how needed to charter a multiday cruise on a big boat or navigate out on the open water.