In the pic above, you can see the front of the house, and the red arrow points towards a
400' long drive (not in pic) out to the main street. It's turning from the street to our driveway where we loose cell phone calls.
In this pic you can see an attic vent near the peak of the roof. I have run an ethernet cable to this vent, as well as to the one at the same spot on the opposite (rear) of the house. My thought was that these elevated locations would be good for coverage.
I hope that helps!