One method that will tweek it into profit is the Fibonnacci staking plan.
Seletion has to be 2.60+ to make it work.
1 2 3 5 8 13 21 34 = 86

Have 5 banks of 86.00
This allows for 5 lots of 8 outs in a row.

Start again after 8 outs in a row.
Start again if a winner is struck at 2.60+

Only bet the selection is 2.60+ using Betfair.
Wont work using the TAB because of the fluctuating prices.

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Cheers.