I'm another cautionary person suggesting you attend lure coursing events before continuing to do this. There is more to being a lure operator than just running the lure. You need to know how to always keep it in front of the dog so it doesn't catch it, know when to slow it down so dogs don't get their legs sliced by the line, and always check the field for holes. Dogs running it need to be in shape, not just going for a walk every day shape. There are dogs running in sanctioned events that get injured so be prepared for that. People always need to hold on tight to the leashes of their dogs that are not running because if a dog gets loose, it can cause problems on the field. People running their dogs need to know to walk the dog afterward to cool it down.
There's so much more to running a lure machine than running a lure machine.