Thermolok,
You might want to try a product called Predator Supreme Decoy. It's a round ball, mounted to a spring, mounted to a stick and is powered by 2 AA batteries. A rabbit looking decoy fits over the ball and is activated by turning an "on" switch. I have used one and it works well. The only drawback is being able to push the stick in frozen ground. I've gotten around this problem by using corn stalks for support or a small diameter metal stake. It costs $40 and is available thru Cabela's.