If someone is doing criminal evil, you're probably dead or calling 911. I wouldnt worry about placement so much. Kind of like being robbed, if they want something, most of the time it's better to just give it to them.I will be installing a dascam , been thinking about how the real world works. If I was a drunk or crazy nutcase and realized I had just been videoed doing criminal evil, I would grab the cam and run off with it. .
The key is that in most cases, a camera will prevent criminal activity.