THought I would pass on a profitable system for the few who have the temperment to bet it.

Rules are :
1. Barrier 5 or wider before scratchings (removes the overbet inside 4 barriers)
2. Unitab 100 rated
3. Has only had up to 4 previous career starts

Thats it.

Selections : 1229
Return betfair after 5% commission : $1368.45
Strike rate : 27%

Lots of action and a profit. If you restricted it to $3+ bets :

Selections : 913
Return betfair after 5% commission : $1061.33
Strike rate : 20%

Thats a profit of 16% on over 900 bets.

There are a couple of other ways to make this more profitable but thats for you to work out.