A very interesting day.

According to selections of the original system, 2 races were selected for a total outlay of 22 units and 1 of them returned 38 units.

Both races would have been dropped according to Option B which drops races where the 5th fav is the same odds as the 6th fav.

Using the odds on the web2bet site, a total of 6 races were identified with returns on 4 of them. These odds are turning out to be a good source. Maybe even a set alternative.

Further testing required.