Hey Ben, I have lots of friends-climbers down there with whom I can put you in contact with.
Though the first thing I can tell you is that summer isn't the right time for that area. They always say it is too hot to climb, but I guess you may not have the whole choice for the time.
However, I will investigate towards my buddies down there and let you know for details asap.
For gunksbouldering.com, Dave Toth, who's the moderator and administrtor has left the stuff so the website and forum isn't with updated by now.
I'll get you facebook contacts and those guys are real local to tell you all about it.
Of course, you will have to be recommanded from me ! ahahaha !!!
Bye for now,
Stef.