if I understand your question then....
If I understand it(from your subject line) you are in San Francisco(SF) and wish to get to half Moon Bay? Well, there are two routes that I know of.
1. Head south on the Freeway and hang a right a tad south of Redwood City.
2. Head out Golden Gate and keep going West until no land marks are south of you. Then hang a left and go southerly until you see a large indentation in the rocks, aim for the center and keep the radio on and tuned to the USCG work channel.
hehheh!
(jes kiddin)
Top O' the Season to you all,
ahhh, then it's going to be ....
French -> Maybe I should mention, my old Ariel will also be making the trip!
Ah, in that case #2 option will yield better results. heh
Seriously, I would drive over to HAlf Moon and Pacifica and talk to a couple of the boaters there. I do know the surf can be bad with a large low far out to sea especially in Half Moon. Local knowledge is your safest bet.
Top o' the Season, and best of luck,