WTF does a cable lock through your rear wheel do? We all know even the thickest cable can be cut in 10 seconds, and if they brake open the u-lock then the cable was worthless.

U-lock back wheel, seat tube, rack or pole. At least 10mm hex chain for front wheel, down tube, rack. It's been said before, almost no bike thief carries tools to get through a u-lock and a chain, they require different tools. And with this method if they get through one, most they can take is a wheel, and more than likely there are 5 other bikes within a block that are easier to mess with than yours which has 2 locks on it