How about glueing a mousetrap on the inside of each scoop? That way any moron who tries to pull them off will get taught a lesson. They may get the scoop, but you will know who did it. (they'll be the person yelling with a mousetrap on their finger)

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1997 Mustang GT "The Freak" - 13.80 @ 101.70, 2.07 60'
1995 Honda VFR750 - not much @ really fast (actual data pending.)
1964.5 Mustang 289
Rice Haters Club Member #13