Chad - Thanks!! Unfortunately I do not have a green thumb at all. We had thought about the large plant/tree in planters idea, but am pretty sure we wouldn't be able to keep the poor things alive. And the edge of the patio plantings won't work due to an area where the walkway leading to the patio from our driveway would still be open and would require a mighty high gate since it is in the direct path of that perfect 2nd floor peeping-tom window!! My next house will be the one that sits on the hill...
I may end up desiging my own creation for this dumb problem and I will include everyone's name on the patent request!! We could make a fortune...