Ok, I'm pulling out my old Sketchers roller skates and I want to go skating outside.

However, I don't want to bite it on any of the many bad pieces of sidewalk around the city. I am going to head over to Golden Gate Park on Sundays and skate on the closed roads but where else can one skate without running into crowds of tourists, pedestrians or bad sidewalk?

So where are the best places to roller skate in San Francisco?