I have to respond on this one. I ran a backhoe for years. I always dug water lines for this old well driller. One day I asked him about witching wells. He said "oh yes, It really works. Let me explain. When I arrive on the job and the owner wants the spot witched, I do so. I look up first, no wires, or trees. Then I see how easy it will be to get the rig in. After taking all of this in, the wires always cross on that spot. I also was steered wrong by farmers with wires looking for tile. I have dug many, many holes looking for a sure thing. Thanks