The downside is that Granite Creek is no secret. (And now that I've posted about it, it's even less of a secret. Rats.) It might be hard snagging a dispersed spot during prime season. I lucked out.
A fellow nomad came by to chat and he informed me the Forest Service had imposed a four day dispersed camping limit rather than the typical fourteen or sixteen days. Popular area, high season, Labor Day weekend coming, and so on. Well it was only a stopover for me. I want to continue north before it gets too cold. I discovered a little frozen condensation around the edge of the windshield (outside, not inside). That's a sign. Gotta go.