At 15:02 15 August 2015, Sean Fidler wrote:
Next step is hacking your competitors FLARM and making
their screens
display Dilbert cartoons.

No, no, no, far too obvious! What you need is an electronic
"box" that garbles the Flarm data to show the opposition that
you are climbing at only 1 knot when in fact you are climbing
at 6 knots.