Police in Lincolnshire say they are still catching hare coursers on a daily basis. There have been 550 prosecutions since September 2012, and 1200 reported cases over the last year.
Officers launched their special crackdown 'Operation Galileo' last September and say they are bringing more offenders to justice.
One recent incident resulted in around £30,000 worth of betting on dogs for the offenders.
The illegal sport, which involves dogs like lurchers chasing hares to kill them, can mean big money for those behind it.
But for the farmers it's a blight on their land, and one with huge financial implications as they have to devote a lot of time to finding and fending off the coursers.
Mark Leggott who farms on the Fens near Boston has been speaking to Kate Hemingway.
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