Would dowsing work if your eyes are closed? Are you saying they paid you to dowse? Why not use a pulse MD?
TH I think with your 14 years experience, you had a good idea where the lines were. And TnMountains you may have had an idea where the old water line was.
I worked for a telephone company. I had a contractor show me he could find my fiber optic lines with out using my locator. He walked out into the middle of a huge field holding two wires and said there is your line, I hooked up my cable locator and the cable was right there.... The field was about a hundred yards off the road and we had fiber optic lines buried 4 foot deep through the field, field was about 4 foot high in weeds, lines had been buried for over 10 years, no visible sign left of them ever being buried there and no locates had ever been done there before.
A home owner had bought 10 acres and wanted a water line put in from the road to his property which would have to cross our buried line. Our company had bought an easement from the previous owner and buried it over 10 years earlier... Previous owner owned several thousand acres along the road in a rural area, he was starting to sell off 10 acre tracts.
I started using the dowsing as a way to double check my locates, as it was my job if the fiber was cut on any locate I did. I would dowse first, then hook up my locator which put an electrical signal on the line and located again. I have located the water lines and cable lines at my current home using the same process when I was doing yard work.
And to answer your question, yes it works with my eyes close.........First let me be very clear, I AM NOT SAYING I CAN DOWSE ANY TREASURE, just that I can locate electricial and water lines... I dont get any vibrations, no 6th sense, I just go off the reaction of the wires when they turn as i cross a line, they do not point down they tun in......
Take 2 coat hangers about 12-16 inches long, bend them into an L shape, hold one in each hand like a two pistols like a cowboy walking down a street with his pistols out, the short ends losely in your hands, when I cross a burried electricial or water line the wires will turned towards the middle into each other, if I backed up away from the line they would spin back towards the front....