In two or three weeks I'm going to head south to Los Angeles from Northern California, and I was debating whether to bring my cable lock, my u-lock, both, or perhaps a guard troll. Not sure if I'll be spending much time off the bicycle in high crime areas, though I was considering visiting a few friends in the Bay Area. I'm an ultralight backpacker, so the idea excess weight (while not as much an issue on a bicycle) concerns me. So does the idea of losing my Long Haul Trucker, though!
What do you all use?