My point is, in the moment you guys raised detectors that's when the test was wrong, sure it may be "an idea" as most will see it but it doesnt come into consideration the conditions of the soil/sand of the test which is where each detector shines differently.
There is no real world conditions since no one goes walking with a coil raised 5"-10" of the ground ... lol
Depth =/= air height.
HH !