Hooter, I trained greyhounds in those days and knew Geoff and Hector very well. What they are telling you is fact about 40 years ago. I quit greyhound racing for the same reason you have said. Yes races were fixed and drugs were rampent. There was a royal commission or a big inquiry if you like, into greyhound racing about 20 years or so ago and a lot of people were implicated into race fixing and other things.
These days are quite different and for the betterment of the sport, and I am proud to be an owner trainer of greyhound in this current period. If you are thinking of coming back into the sport, do it, you wont regret it, I haven't.

coops