Years ago, we had a dog that absolutely would not stay in the yard. She would tear the wooden fence down and she'd be in the street every evening when I got home. Even a electric fence didn't work. We finally tried one of those underground electric fences with the shock collar (Radio Fence). It worked wonderfully! Anyway, installing the fence wasn't hard. It required digging a shallow trench, about 1 inch deep, with an edger. Run a wire in the trench and cover it up. Hook up a couple of wires and plug it into a wall outlet. The hardest part is drilling a hole through the wall into the house and sealing it. I was thinking that most folks here have edgers, so this might be another service you could offer. Since the system is low voltage, and the 120 VAC supply is just just plugs into a wall outlet, I wouldn't think you'd need any kind of electrical license. It took my wife and me about 6 hours to install our system on a 1.2 acre lot. I just thought this might be something to offer during the winter months. What do you think?