I was in my front yard one dark night, detected a signal near the cement circle driveway, which is reinforced with rebarr. Dig a hole and decided to PP with the Pro Pointer. I ended up using a nickel I had found earlier to extend the range of the pointer and in the routine of standing up once I dropped the nickel. No probs I said, I'd frozen in my tracks, it had to be "right there", so find it with the detector. Well, the V3i and the 6xdd coil wasn't finding it, AND it had to be in a small space on the ground. After some frustration I went to get my old Whites 5900, and still didn't hit the signal. OK, lets try the V3i again with the 10" stock coil...I was getting real stubborn about finding that nickel. Nada. This went on for a good 30 minutes before I felt I had to give in, so I and headed to the house, and then I eyeballed the nicked about 10 feet toward the door, on a bunch of pebbles on top of the cement driveway. The way I figure it, the nickel fell on top of my untied tennis shoe and rode till it fell off the first trip I made to the house. I look back and laugh about it now, but I wasn't giving up. I mean really, two detectors, three coils plus the Pro Pointer scraping the ground, to find one old nickel. Persist although silly over one nickel. martin