When you put that spotlight on them, their eyes reflect the light, making them easy to see. Being curious, they just freeze and stand there, trying to figure out what that big obnoxious light is. Takes all the sport out of it, almost like shooting fish in a barrel. Hence, illegal in most states.
@sc928porsche, same assignment, did the same thing with my wife's minivan on the way to pick up a pilot training classmate who was stopping through overnight on a cross country flight. Most expensive venison I ever had! And a great shock for my friend when I showed up at his hotel with my truck, dead deer, and the question "Guess what we're doing tonight?"
