Have you guys ever considered opening for 24 hours? I am not sure if your city licence or existing bylaws would allow this. What I do know is that your range seems to be very busy more often than not. And recent breakins have occurred during hours you are closed.
Not sure if the current business would support this model. But there are many shift workers out there and this may attract them in, as well as maintaining a presence in your store 24 hours.
I know of such facilities in the US, just wondering if this was a feasible thing or not here in Calgary. Thinking out loud is all.