I understand what you mean. I am a stage magician and I've seen and done some incredible things. But in the words of one of my ancestors, "when you have eliminated the impossible, whatever remains, however improbable, must be the truth."

At issue is if dowsing is impossible or improbable. Some seem to dismiss it a priori. I agree that testing is necessary, but skipping an invitation from codger to go see him dowse because it must be tested is not logical. Either he can do it or not. If he can convince a spectator he can do it, then you can try to talk him into a controlled test. But some of the people who can do or have experienced extraordinary things are so tired of the doubt and criticism that they do not trust a fair test. That this is an excuse of the conman is not indicative that mistrusting the agenda of the skeptic is an indication of fraud. Meet him on his own turf and terms first, and then you can talk test.