Target the 7 shortest Newspaper pre-post priced horses.
Races with 11-13 runners only.
Race fav must be $2.60+ at jump , otherwise its a no bet race.
Re-Frame the total of the 7 horse's pre-post prices ,market percentage value by multiplying its current percentage by 1.10 & bet the overs.
e.g. market % for the 7 horses could be 106% X 1.10= 116.6%
Now input this 116.6% into the box & every thing will be worked out for you in one second.
Bet same amount on each.
This hits on plenty of winners.

One can use Ozrace tools to do all this for you.
Market Re-Framer.

http://www.ozracetools.com/modules....e=Market_Framer

Cheers

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Cheers.