I don't live in a high theft region but I have my saddle strapped with an old bike chain, I also have the bearing in the bolt for seat post, I have my pedals lock tited down so they're a bit more of a pain to get ( I can't get it with a allen key but pedal wrenches work). I have my quick release levers locked down (easy to undo with screwdriver) and then I u-lock both wheels to the frame and rear wheel to the locking area. with all of this done I tend to believe I'm going to be the most secured on the rack, if i'm not, I write down the other persons idea. I also uglify my bike.