If averse to Sheldon Brown's method, mechBgon has his own locking strategy using two locks, preferably one of different types, so a thief will have to carry two different types of cutters (or power equipment.) I personally also use different lock cylinders, so a would be lockpicker would have to be able to carry an Abloy decoder as well as a bump key or other pick, however almost no bike locks are picked open unless they are extremely cheap wafer tumblers, if that.

Perhaps just keep a chain lock on racks you lock up to in the day, ride with a U-lock, and that should do it in most places.