The route seemed a little stiff for 5.9, more like easy 5.10. And it doesn't really need an 'R' qualifier. The protection and belay bolts on the first pitch (the best one) have been replaced. Should only get three stars.
Go up the gully from the hairpin turn (same approach as El Segundo), stay in the gully until fairly high relative to the right side of the Hairpin Wall - then cut left to the wall. This approach is pretty open.
The other routes:
Take a Number 10a (r). Two pitches, left of One Line No Waiting.
BLD 11a, 1 pitch. Center of wall, obvious crack at start then face. Traverse from right to start of route.
Three's a Crowd 10b. Two pitches. Starts under the roof on the right side of the wall. Second pitch traverses left under roof. Cool tooth feature under the roof.
BLD (P1) and Three's a Crowd (P2) share an anchor. From that anchor it is possible to join One Line No Waiting.