Heres a plan I came accross agers ago

Sat Metro meetings only
1)Dist 1200,1300,1400m only.
2)Rescent LS Lengths finished no worse than -2.5 lenghths or better, includes wins.
3)2nd LS Lengths finished no worse than -3.5 lenghths or better , includes wins.
4) Barrier 10 & less
5) Av Prz Money $3500+
6) Place 25%+
7) Wins 10%+
8) Allocated Wt. goin up no more than +1Kg or any amount less than LS

With the qualifying selections .
9) TAB price div must be $3.00-$9.90 at 1 min till jump.

If more than 1 selection , back both.
Is reported to have a 48% POT & SR of 43% over a sample of just 118 races.
No doubt this will pan out to be somewhat less than this over time.

Cheers.

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Cheers.