If you going to follow the same path as many others, then you must be capable of doing it better , or you shall lose.

The only way to beat them is to find a path that is not being followed, but is in fact shorter.
The problem is that after a hundred years or whatever, most paths have been explored.

An area that could work is to limit your studies to finding longshot winners.
Most Punters try to back the winner of the Race and that is usually amongst the Favoured Runners, and the Price will often be pretty much an accurate reflection of the Chance of Winning.
But of the roughies, the Odds are only approximate, sometimes VERY approximate.
Amongst these roughies are to be found Overlays.