At Least One
The Cons that I see here is that I am being squeezed abit as the older folk die and the new owner post no trespass. Is getting harder to walk a few hundred yds to a diff calling sight after work & before dark as I dont have time to drive a few miles. Night hunting has become much more desirable.
The Pros are the cold weather. If you step outside and the wind is blowing right through you this is the time to go!
Those critters, "even the birds" have to feed much more just to keep from freezing. If you go there is an excellent chance that you will see no one!
The volume of the call will reach well into the posted areas.