Yesterday with some trepidation, but a bit more determination I went and scoured a couple of "hit" sites again, they were the findless wonder sites. Anyway I dug out a dateless zincoln, the next site was a real PITA, the find was literally under a tree root, about 7" under the ground, but a 1958 Wheat. So far I have found 4 Wheats in the backyard, a 1917, 1945-D, a 1955, and now the 1958. These all came from under the elm tree. There are more hits back there, but I am going to have to come up with a chicken wire screen thing or something before I want to dig and sift again.
I am getting more confident using the deeper settings on my machine. But the digging stinks, which is why I want a screen/mesh thing to put dirt through. Canna wait to see if silver lurks under the elm.