When it happened to us, we borrowed a dog (collie/allsorts) after the first burglery (as well as getting quite distressed, mending security lights, taking to sleeping with a length of iron pipe under the bed). Lucky for us we did: a week later the feckers came back to our lock-up to try taking the rest of the kit, that they hadn't been able to carry the first time. The dog was well aware of our heightened state of alert, as we sent it out several times a night to 'see whassup, girl!'. It was most gratifying to hear the dog go off like a a furball explosion, and exclaimations of surprise from the bad men. They didn't come back.
I believe the culprits moved, because after a spate of similar events in the village, all went quiet. It's goodd to be reminded that people nick things, tho. Maybe I shouldn't leave my car keys in the ignition overnight...