BTW, in addition to the U-lock you carry with you riding, you can use a leave-at-home mother-of-a chain and padlock. A supplemental lock-system that stays at home doesn't have to meet any portability requirements, and you'll be elevating a thief's time/techniques requirements.
Ah, but as other's have said, no lock is better than what it's locked to or the locking technique used.
"Mother of a chain?" Never heard of it. Care to enlighten? Is that like "Son of a ......?"
Last edited by Sprayman; 09-18-13 at 08:49 PM.