Given that they are quite small (couple of foot), can be flying at say 400' at 20 knots
Then why not put up the kind of nets or fine mesh fencing you see around golf courses to stop errant balls from bashing innocent bystanders?
Or at least have helicopters capable of dragging the equivalent of a trawling style fish net?
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I've read that jamming is illegal in UK, and that it would be easy to set up a GPS program for the drones to troll the field without external guidance.
Could jamming halt or incapacitate drones following a GPS program?