What's everyone's thoughts on perimeter alarms? I've had 2 run ins with facelift light thieves and I need some deterrent. I'm a sitting duck because its parked on a main road under a street light, I can't park it up against a wall etc because I'll block other residents in. I've no garage and can't hide it from view. I know it only takes a matter of seconds to rip the lights out but if I can slow them down I might be able to launch something heavy and sharp from the window! Any suggestions on what make or where to get them from would be gratefully appreciated.