Here is a plan that pulls about 34% winners.
It`s money staking plan is designed to place more money on the TAB fav that has the stronger chance of defeating the 2nd fav.

Bets are placed 1 min before jump

We back the TAB favorite that WON it`s last start.
Must NOT have won 3 on end (e.g. 111)

STAKING
This is the important bit.

Divide the price of the 2nd. Fav into a fixed take out figure e.g. $50
That resulting figure is then placed onto the selected 1st.fav.

E.g. 2nd.fav is $3.80 divided into say $50=$13 onto the 1st.fav.

If the 2nd fav is paying $5.00 divided into say $50=$10 onto the 1st.fav.

So in effect ,we will be placing more money on the 1st.favs which represent stronger value & less on the favs representing weaker value.

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Cheers.