Having a rough time.. I have the Fisher F2 and it say there is something there i dig and dig but nothing. I have a Garrett pinpointer. Any tips. It usuall flashes between zink quarter dime and some times iron
Welcome aboard from the great state of Pennsylvania (USA).
You didn't mention your state (or country) - but you might consider jumping over to Sub-Forums: Select Your Area.... and selecting your state for information (i.e., clubs, hunts, finds, legends, maps, etc.) directly related to your state (or country).
As Wayne said, you may have the sensitivity up too high. Another possibility is that there are mineral pockets underground that get broken up when you dig making them disappear. If you cut a plug and the signal disappears, I would remove another 2-3 inches of dirt. Sometimes when you remove the soil over the target, it also removes the halo created by the target. In many cases, it's the halo that triggered your machine in the first place.