My effective theft detterent=My bike stays with me..In the rare instance when I do lock it up, I am looking right at it. I am not a fad of locking my bike up. Human nature is something else. I have been around a long time. I have a pretty good idea of what works and what doesn't work!!
In addition, I like my bikes (bicycles and motorycles) to look super good to my eye..Not slacking off because of "joe crook"..