1). 5 Runners or Less
The logic for this system is that, the fewer the runners in a race, the higher the probability of the top rated horse winning the race.
From the 5 years of data there have been 1070 races where there were 5 runners or less.
Whilst these are blindly profitable for the top rated horse, we only make 41 points profit.
So I look at those race types which were more profitable than others.
The data for this system is shown in the systems spreadsheet which may be found at R9-Portfolio-Special.xlsx
The tab named 1). 5 runners or less shows all the races (over the 5 year period) shows the top rated horses for every qualifying race (i.e. where there are 5 runners or less.)