Re: Tinsel might do the job or a net
"I'm imagining what the pilot of a helicopter would have to say about suspending a rotor-jamming net underneath their aircraft."
But the downdraft of the police choppers own blades would keep any suspended net under the chopper.
You could always weight the net down and also use metal rods around the perimeter of the net to keep it's shape.
Help, you could even get the SAS in, with their men armed with submachine guns, suspended off ropes under the chopper - have you not seen "Who Dares Wins" ??