I'll be doing my first S24O this coming weekend, riding up to Samuel P. Taylor State Park from SF, camping overnight, then riding back. I'm really excited, but I'm also a little worried about what do to with my bike while I'm asleep in my tent--and maybe also what to do with my loaded bike if I want to, say, stop off somewhere nearby for a swim or a bit of offroad exploration. I've got urban bike security pretty figured out, but this is clearly a different situation. Of course I'd love to put my faith in humanity, park the bike somewhere out of the way, and hope for the best, but my faith is weak.

What do you do with your bikes while camping and wandering on tours?