Let try ( Tactics ) for Metal Detecting

Let say you swinging your coil along and  you get a signal that sound half way good well stop for a moment and think how much time do i have to hunt today  and if the answer is plenty then go ahead dig that signal. If you have very little time and you can remember where the signal is the by all meant come back another day. I personally have dug signal that didn`t not sound all good at first until i got down a little and the signal got better. You might try changes in to difference mode setting. Every detector is different so know you machine.