Bought a disc lock w/alarm before a major trip to the Smokies. 3rd day in, parked at the motel, checked in locked it up and took a shower. Wandered down to the office later with fellow riders to inquire about a restaurant. It was not in walking distance so we all jumped back on the bikes...yep...forgot the damn disc lock. Wheel was already cocked the way we were going...a nice 90 degree pullout, bang on the parking lot...then the alarm went off which was the icing on my embarrassment cake.
After that trip my buddy bought me one of these as a joke(the yellow one):
I actually used the thing for 3 more years...worked perfect