Follow a technical corner then move left and over the roof (crux). This is a very good climb and well worth doing. It even stays dry after a rain, so it should be doable whenever you get up there.
Location
Follow trail to Orange Crush off of second parking lot. Near the top you will break right to New Wave. Sally's Alley is in the middle of New Wave wall.
Protection
7 bolts to LO. You may want to stick clip the first bolt, otherwise you may bounce off the ledge and keep on going, especially if the ledge is wet.