Short of booby trapping I'm not sure what else to advise. We also have a block or three of homes down the road a bit, with plenty of junkies and tweakers strolling around looking for something to steal. My son's tricycle was stolen after we forgot to take it in the house one night. I'm not sure what you could legally employ in the way of passive defense, electric fences, surveillance equipment, leave a TV on at all times in the house, leave lights on...there aren't any magic tricks that will de-victimize you.
Secure your possessions, secure your home, develop at least a watchful relationship with neighbors...have a good offense planned out just in case. Also keep a round chambered so next time there will be no noise to alert anyone that you are armed.