I was out yesterday to a large turn of the century park that I often frequent with my Silver Umax. I have my disc set to just below foil so that I wont miss any rings or nickels.I went to a section of the park with a fairly large lawn area that I have been avoiding because of the heat.The largest part of the lawn area in the middle has no shade in the center with large shade trees in the corners.After detecting the shady areas and finding several dimes beer bottle caps and a nickle,I moved out into the center and detected the normaly hot section of the lawn.I found a pendant several penneys a small broken buckle, a clad quarter, and several more beer bottle caps.I expected more targets to be there but they just were'nt there.Being that it is a public park,it would stand to reason that it is probably detected by other people besides myself.This park gets a lot of traffic. The silver Umax ia a coin shark.I would say that if you are not finding nickles,dimes and quarters that they just arent there. Pookybear