Just for your information;
This depends on the user experience and perseverance. what a many times a man has succeeded by a dowsing rod
like PPL and as another side no success with other kinds of LRLs.
The attached file is a part of complete file that the nice man( David Villanueva) sent for me free of charge.
the complete file is in 54 page with many of interesting things.
You can find more interesting things in PDF attached file in
http://thunting.com/geotech/forums/s...ad.php?t=11939
from one really independent user albeit I had put it before in other thread, I put there again only in order to know if there is any body in this world succeed with a LRL not for making money for myself.
There you see the guy could hunt by a Lectrasearch or by a PPL.