Why would it be a wind up? I believe bloodlines play a huge part in successful breeding. Have studied greyhound bloodlines extensively, just because a dog is fast doesn't necessarily mean it produces fast offspring, greyhound breeders often have broods that have never raced. A lot believe to many races can effect a dogs ability to produce quality pups.
Don't 100% agree with the adage worker to worker
As for bag chasing, I work for myself, enjoy running dogs and cannot afford to fall foul of the law, (wouldn't get any local work it is large shooting area where lurchers are disliked) so bag