funny you should ask about "motion decoys", several years ago i had a turkey decoy snapped right off its stake wile i sat 20 yards in front of it. the coyote apoached at mach 2 ran right past me so close i could smell him, grabbed the decoy and ran off. all this happend in the blink of an eye at point blank range. sort of ruined my turkey hunt but was the most exciteing thing i have ever seen in the woods. and yes i did try to blast him, by the time i snapped the gun to my sholder he was gone. the only motion in my decoy was the wavering broken stick the coyote left.