There are several dowsers out there, but my findings are that the good ones are hard to find. They do not advertise hardly at all, if any, yet they stay busy. I have permission to advertise a good one named Doc Thomas. He was reluctant but agreed to take on some extra work. He is good. You will have to e-mail him and if he does not answer tell him I recommended him and he promised he will respond. He has almost 28 years of experience and is an inexpensive way to find new sites to hunt. You will use more gas in one afternoon looking around than what he will charge you to dowse a map. Give him a try, you never know what he may lead you to.
Contact Doc at: firstname.lastname@example.org
"Anyone who has never made a mistake has never tried anything new."Albert Eienstien
May all your trails be smooth and your treasure sites many.
Best Wishes and Good Hunting