>>7323When I was last in SF with my girlfriend, we found a similar natural bower near the paths down to Marshall Beach. I believe these trails are called Battery to Bluffs trails on maps. There was no hanging meat in it, so we did have sex there. I think we probably would have even if there had been meat.
Also, just north of there along the beach as you go toward the Golden Gate Bridge there are rock forts that people have made to provide a little privacy for sex. This is a photo of one. :)