I got my neighbors interested in detecting last spring.Now they are addicted.They went to a local lake,chopped holes in the ice and detected in the water.The ice is thick enough to stand on.They found a zinc penny and clad quarter in their water sarfari.They did chip/dig a 1917 Merc dime at 7 1/2 inches of the frozen shoreline.The wind was blowing,it was sleeting and raining.I think they need to be on stronger meds.Bill