and all over the bud ?
If you're looking at cams, try a trailcam - it's a motion sensor couple to a digital camera and IR LEDs. It's meant not to spook game as it walks by, so the asshat won't even know that you have a picture. Maybe attach them to a police report about him stealing your bike or something and that you've caught him in your yard enough times that you installed the camera to catch the bugger.
Or just post his pic around local schools as a "warning".
Either way, if you're legit, why not use the cops to your advantage - that's why they're there.
And no guns involved...