Well it is not a system, it is handicapping, although I do it via software, developed by myself, (some think that true handicapping can only be done manually).
I give you a hint, and it is a major part of my rating (a part only!!), watch out for horses moving up or down in class in a BIG way!!! It is not uncommon for me to catch a place divi. of >$7 by betting on horses doing poorly in the previous race, and coming down in class !! and being ignored by punters! hence my aversion for following money!
Now there is the catch, how do you define class?
I will not tell you how I do it, suffice to say, the TAB defined class is a joke!
I have my own class rating, and although they may be incorrect they served me well.
Crash had alluded to how to define class, in the past, and his ideas were on the same track as mine, or vice versa.
If he is willing to enlighten you, it's up to him.
PS. Contrary to popular wisdom I DO follow maidens and low class races
AS LONG they have past records they can be rated, if too many first starters or limited records, forget the race.
I think it is much harder to pick a winner out ten good horses then it is to pick one out of two!
Good luck!