I don't know a lot about electric fencing and can't figure out how to make a hot wire on the top of the fence work. I plan to put two wires on the bottom, but have trees close to the run and need to protect the top also. If a raccoon were to drop onto the fence from a tree and touch a top wire, will it ground and give a shock? Or do I need to do something different? I also need to consider the coop itself and prevent any access from the roof down into the run. Thank you for any suggestions.