Everyone let me first say a big thankyou for all the great comments and suggestions
I thought I had tried everything but I will revisit everyone's suggestions when I am out in the gold fields next
its interesting when you are at home everything seems to make sense but once you're out in the gold fields everything seems to go out the door so to speak
I like the fact that there is so much excellent advice on this forum and hope everyone gets plenty of yella, you deserve it
DW I liked your suggestion take the rock in hand and approach the coil side on. not above the coil or below it but on the same plane as the coil.... if it is a hot rock it will not make a sound, if it is a metal it will sound the same as it would if you passed the coil over it.
I will try that one next time I come across a potential hot rock, and I like your suggestion The easy way to establish that it is a false / unwanted signal can be done by visually pinpointing the reactive spot, change your postion and approach from the opposite direction, and again from the other 2 sides .. call it North South East West if you get a repeatable signal from all direction over the exact same visual pinpointed spot >> DIG .. if not continue walking.
thanks again hope to be out in the golden triangle again in the next couple of weeks, will let you all know how I went
Regards
Marxdymoose