Knock the feet off the your full bodies if you can and put out all the shell decoys you got. If calling does not work than call harder.If it's a spot they stay for the winter then the snow won't make 'em bug out, if it's only 4 or 5 inches. Any deeper than that they will probably slide east or west for awhile until it melts a little, but they shouldn't bug out for good. If it's not a usual wintering spot, then they will probably bug out until the spring migration. Good luck!