And then you've got dogs, without saluki blood, with so much natural speed, that they're on a hare in seconds, and not from kickups, and the hare, even after it goes up another gear, just can't shake the dog off, and gets caught.
When I used to go regularly with my best dog, slips of between 30 - 50 yards would've been the norm, and he caught loads. Seen plenty of coursing dogs, and dozens and dozens of coursing vids where the dog is slipped as soon as the hare gets up, and the dog still gets dragged around for 3, 4 or whatever minutes