Rule 1: Find the race (or races) with the least number of runners of the day.
Rule 2: Bet the horse which is to be ridden by the jockey with the most winning rides at the track (of those riding in the race). Check the Internet or the Sportsman for this information.
Rule 3: In cases where two jockeys have ridden the same number of winners there is no bet.

The website www.horseracingsystems.net comments: "Jockeys who have proven knowledge and ability on a specific track tend to have an advantage over those who haven't. This is even more apparent in small fields, where races often turn out to be tactical affairs.
"I opt for the number of winners a jockey has ridden on the track in preference to strike rate, which can often be misleading - especially when a low number of qualifying rides is evident."