How did riders manage in the past? For instance Bobby Beaton never had a full time mechanic or driver and managed to get to Hull for home meetings and to away meetings from Scotland.
In greyhound racing every dog was sampled pre-meeting, it became too costly so now a GBG Steward comes in unannounced and takes random samples, some pre race and some post race. The track stewards can also request a sample if they consider it nessesary after a race.