For the new hunters that can't judge distance. take a life-sized decoy (not a magnum or super-sized one) out to the local high school football field and set it on the goal line. Now back up and see what it looks like at 25, 35, even 40 yards (which is about the furthest you should shoot). Then back up some more and see what it looks like at 50, 60, 70 yards which you shouldn't shoot at. Study it for a while and at least you'll have an idea then.