If your not cutting I'd suggest running an "alarm" off of the motion sensor that blairs loudly, unless you can't have people around hearing. Then I'd run an additional light off the motion sensor and run it all the way to your room so you will be woken up with light if they try to come back.
Personaly I'd chop em then put up fake Christmas trees in their place and hit them in the face with a crowbar if I caught them on my property again.
Also I'd get salt shot for a shotgun instead of the beanbags.
Salt breaks the skin and it's salt!! That shit hurts like a bitch for a while to! And it feels like you got shot with little actuall damage to the person being shot. It's a great option for thoes of you that feel shooting people is the option.