I live on the Pa-Ny boarder and when the frost gets down around3 or 4 inches deep its tough. fields get frozen first so I try and stay in woods where the leaves keep the ground from freezing to deep. an early snow will keep the frost from going to deep also..Its tough in the early spring in fields--gets muddy on top with frozen ground underneath. If the ice on some of the streams isn,t bad I detect on top and then break through to find a target-same as on the edge of the river here. It really tough in winter, but when you have to go MD you find a way!!! Jr One more thin is that you have to pick and choose what ya dig-and you get real familiar with what your machine is telling you quick! Sometimes it takes ten or fifteen minutes to dig a spot and its like work. I use a ground down pick axe with shortened handle, make sure the hole is bigger than the object as to not damage the object.