Thanks everyone.
Ah, insurance. I had recently put upgrading it on my to-do list. Up in Vermont, you don't need to worry about hit-and-run accidents. I had a very nice liability policy with plenty of money set aside for uninsured motorists and even vandalism -- but I'm not covered for a hit-and-run. This is coming straight out of my bank account.
Double-tapping is the best advice I've heard so far. Two in the chest, one in the head. And just think, my M4 is sitting up in Vermont with several boxes of ammo and a couple of 30-rd mags laying around, with nothing to do...hmmm...