What mode are you running in? Occasionally when in a park or something while running in coin mode, I will get hits and when I go back over the area, I get nothing but the target will register on the machine but not make a tone due to the descrimination. I have also found that swinging the detector too fast will give misreadings on the first pass. As mentioned earlier, dig only solid hits, or repeatable tones. Also owning a new machine doesn't help. It takes a whole lot of practice to get to know what your machine is telling you. I have owned mine for almost 4 months and I am very used to it, can pinpoint well, and have dug alot of coins, but I still learn every time I take it out. Try running on relic mode or jewelry mode, which will descrim out very little and run your sensitivity on about 4 bars. Try that and see what happends. The only way to learn is too keep swinging and digging, see learn your machine, and don't expect miracles your 1st week using it. Most of all, don't get discouraged or frustrated, good finds will come.