I have left the cable exposed in many cases. If it is BNC connections they can also be in the weather. If it is Ethernet connection they also can be out in the weather if the connector has the quick twist ends on it to weather proof the connection. As far as both on the pillar at the end of the drive, you mention the tree shrub is, that I am guessing is the ones to the right of the front door looking at the front of the house. For that area I would put it to the far right corner on the front of the house so it views across the front window and door . Just remember when installing cameras, walk around, what you can see the camera will see. So, coming out the front door, look at the pillar at the end of the driveway. You probably can't see it till you get to the corner of the garage. I like the 2.8mm lenses as they get a nice wide view.