I just want to thank all of you who answered my post. I valued your advice so much so that I decided to purchase a 5''x8'' coil (actually my birthday is coming up and I hinted to my wife that the coil would be a "Great" idea; needless to say, we got on the Kelly co website and ordered it). I went back to the park, very trashy but quite old, and was amazed by the difference in locating targets. Within a few minutes being there I found plenty of clad, and also a 1918 Wheat Penny, which made my day. I know that for most of you, a find like this is routine, but beside my 1913 Barber dime and 1948 1/2 dollar Walking Liberty, not much has come my way of older coins lately. So, again, thanks all of you, and I can't wait to go back and use my new found toy again.