We had a witcher come out to the farm this weekend and douse. If I'd known how cool it was to watch him, I'd have made a party out of it and invited everyone to tag along. He used an obviously well-worn prong and walked along until the prong swung down on its own, indicating water. We walked back and forth across a couple separate areas until he found what he explained is the center of the vein, which is where a well should be drilled. We've contracted him to drill a well for us. There is no guarantee he'll actually hit water, but the alternative is cutting down 1/3 of our trees, so we're drilling. And praying.