If you really care, get the fancier lock (Kryptonite Fuhgettaboutit (http://www.amazon.com/Kryptonite-997986-Black-Fahgettaboudit-U-Lock/dp/B000OZ9VLU/ref=sr_1_

If you really care, get the fancier lock (Kryptonite Fuhgettaboutit (http://www.amazon.com/Kryptonite-997986-Black-Fahgettaboudit-U-Lock/dp/B000OZ9VLU/ref=sr_1_1?ie=UTF8&qid=1420932077&sr=8-1) http://www.amazon.com/Kryptonite-997986-Black-Fahgettaboudit...) they recommend and buy locking skewers. Then don't buy a new bike, but get a mid-80s steel bike and call it a day. I've left bikes locked up in the worst neighborhoods in SF overnight and haven't had shit stolen.