I once left a macbook pro open with my phone charging plugged into it with my window down and car unlocked for about 4 hours in the Mammoth Village parking lot.
I was entirely sleep deprived and ran into a friend and they asked me to get lunch. I then went to my friends place and took a 3 hour nap. Walked back to my car and it was still there. I'm pretty sure I used 90% of my not getting stuff stolen karma on that day.
Sorry someone took your boots though. If someone took mine I'd be a wreck after how hard it was to track them down.
Keep an eye on the reno craigslist.