It has been proven that frozen chickens will break the window out of the cockpit of an aircraft when fired with force, how about a simple trap that is always set??? I am thinking a sort of PVC pipe that extends out over the pond to drop them in like BSF larva, all you need is to hang a piece of cheese out beyond the opening of the pipe and when they reach for it they fall in, you may need to use Pam nonstick spray on the end of the tube, like the carnies do to keep you from winning the ring toss and such, this way they are sure to slip in the pond, heh heh. That's my idea lets see if it bounces off anyone else with a twist.
