I've only ever hung in national parks here in California. Really, the last time I even camped in a state park is the first day I stepped foot in CA when I moved here 5 years ago - before I discovered hammocking.
What seems to be the consensus with hanging in California State Parks? We're thinking of going to one in Santa Cruz county next weekend, and I'd rather hang! Don't know which park yet though. Truth be told, I'd rather head back to Yosemite - only been there 3 times in the last 11 months - but the family out voted me 2-1