Derek,
that's a great offer! It still depends on us, for instance, seeing when we're there at 10 AM that the sun will be right behind the person you want to see at 4PM. I recently gave an added camera to a church and I had planned to put it right above an entry door. Only after thinking about it a dozen times did it hit me that in the winter, the sun would shine on the camera from about 2:30 on. I moved it up 18" and now you can see some bald spot, but you can see the person, too!

For commercial installations, remember that you're not always trying to protect against customers cheating or stealing; registers need to be watched and slippery floors in the kitchen need to be watched so that if someone slips and falls, you'll have an idea how and why.