If picking your spot in the summer, try real hard to visualize what the route in (and the spot itself) will look like in the winter. Any little dry ditches now that might be wide and flowing after a heavy rain? Any "widow maker" trees on a slope above that might come crashing down at just the wrong time once covered with a load of the dreaded white stuff? Also, scout around for at least four or five miles in all directions, trying to make sure that you don't already have some unwanted neighbors...