Heres a devilishly fun lay selection plan that has shown a very high success rate so far.
Works for Horses, Dogs,Trots & Billy Goat racers.

SELECTION PLAN
.Target all races where there is a TAB No.7 running
If there is not a No.7 selection running, it becomes a no-bet race.

.Selection must of had a race where it ran 7th or worse at any of its prviouse 3 starts.

BET TO PRICE MONEY MANAGEMENT PLAN
Lay bet to price as to a fixed liability of 5% of bank.
e.g. Bank 500 @ 5% = $25 liability per race divided by selection's fractional odds.
e.g. $25 / 8/1 = $3.13 O/L
(8/1 fractional odds = $9.00)

.Use the Free Bet Trader Pro program to place bets under $6.00 with Betfair.

No form study & all bet liability is under control using betting plan as mentioned above.

It is strongly recommended not to attempt this, betting the same fixed dollar amount on all selections, one could get seriously burnt with just one outsider getting up against you..
e.g. if the selection is say 50/1 ($51) at $6 O/L & it wins instead of loosing you are up for $300 pay out liability.

Using above betting to price money management plan , the liability would only be $25 trying to win 50c ,which is also our O/L.

Remember to try & have fun with your punting... if its not...
Ring the punters help line & seek professional advice from people with white coats on ...
But dont ring me & bum me out, I hate that I do...

Cheers.

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Cheers.