There is a local bus that can take you past Devil Slide. It is Samtrans route 294. Devil's Slide is the worst bit of asphalt on entire Hwy 1, in my opinion and should be avoided at all costs.

If the bus doesn't work for you, hire a taxi in Pacifica.

I've ridden from SF to LA several times and never ridden on it. I have my wife drive me to just past it and start in Montera.

Ray