hi rich!
was wondering,DID you set the discriminator to ZERO when hunting?..i have been told the same thing that you will get less iron hits very deep that way!
also,it has been explained to me to make sure you 'circle" your target to ascertain the high tone!..make sure the detector is giving mostly a "high tone hit
from all compass points ,before making the dig ,or no dig decision.appreciate the feed back,and a lot of info!..thanks!

(h.h.!)
j.t.