Yorkota,
You mentioned that you have several targets in a 50 foot circle and expect it to be
20 feet deep according to a LRL. A swing rod type LRL would give you multiple targets
around a 50 foot circle at that depth. It might also give you false targets further out.
I have located several targets in tests and have had my share of false targets in the
field. I would use various types of electronic equipment to pinpoint. Magnetometers
respond to magnetic targets only, (Iron). It could be something valuable in an iron
box. Depending on which imager you are using, that might be the best piece of
electronics to use. Unfortunately as I said earlier, digging is the only true method of
identifying the target. Good luck!
Rich