Re: Attemp to avoid full field failure - Hey Grizz!!
Shocked me, even learned how in minutes.
Take (2) metal cloths hangers
cut each at end of bottom run and near top of one side(before kink)
Bend out slightly to form an (L)
Need (2) 6"-10" pieces 1/2" or smaller pvc.
Short end of rod in tube so it will react naturally
Holding one in each hand vertical at your sides, walk slowly through suspected field.
Crossing any pipe will draw the wands together(or to full opposing positions)
You must estimate to work across, not along each line to target the layout.
Took me about 30 minutes to identify (5) runs instead of (3)suspected and realize they were in a totally different location than I suspected. Also all are running in a Diagonal in my back yard.
Google - Images - Divining Rods Good examples for build