a quicklink on the lead bolts?
can I get a refresh on why it is(was) there?
Rob,
With a screwlink on the 1st bolt you can do the last rappel with a 60m to an excellent stance at that bolt.
You can then go in direct to that bolt and pull just enough rope to thread and rap the last 15-20 feet from the single bolt and pull the rest of the rope from the ground. I have never taken two ropes to that crag.
Kat and I installed that link the first time we did Costanoan and I posted it as an unofficial correction on the author's corrections sticky along with some minor topo corrections.
I also know the walkoff quite well now so I don't have to re-install a link if others don't want it.
The "walkoff" does involve a short section of slabby, fairly steep downclimbing.
It felt like easy 5th class to me when I did it but I didn't put my climbing shoes on.