I got a ban from a FB group for making a political comment as it was against their rules and my post was removed, funny because I was replying to a political comment.
The centre green should be about three inches higher than the track to stop riders puting their front, and occasionally the rear, wheel over the inside line. In F1 drivers are using the red and white marked kerb as part of the track, maybe they should switch the Jim Bowen phrase round, Stay off of the red and stay on the black.
If three riders were at the tapes at 7:30pm Harris would've been disqualified. It was agreed to delay the meeting for fifteen minutes, so the problem never arose of him delaying the start of the race.
They used to sample every greyhound for testing but as you say costs were prohibitive and it is now random sampling. Sometimes before a race and sometimes after as the person parading the dog could addminister something.