Here is a simple system/method that requires no form study,it's purely mechanical,no rocket science required.
Rule 1)operate on Sydney & Melbourne Saturday meetings
Rule2)operate on open handicaps & Welters only
Rule3)only consider Tab nos 1,2 and 3
Rule4)the final contender is the one of those 3 ONLY IF it is the prepost fav.
Rule5)odds must be no shorter than 2/1 prepost
Rule6)use a progression of 1-1-2-2-3-4-5-7-9

It's fairly self explanatory,we are letting the handicapper do the work for us by giving us his opinion of the best 3 horses in the race.I know I will cop a lot of flack about using a progression method as opposed to level stakes,but is is a statistical fact that favs win approx 30% of all races,and a 2/1 winner anywhere in the progression will put you in profit.
I would suggest that when a winner is struck,you drop back to the previous bet,and carry on from there.

Any stats men care to check it out?
Of course it could have a lot of tweaking done,like days since last start,recent form ,win% etc.
Any trhoughts would be most welcome.
cheers