If one wanted to try the 4/1 divisor over 2 horses a race , one could use the target betting progran below.

http://www.ozracetools.com/index.php

The 50% SR with the radio TAB selections top 3 is about 5 points better than the average tipster based on 2 years results.
50% is a strong SR especially some of the prices it manages pull.

The Tipsters poll in the Weekend Australian has a Top 3- 55% SR and its
Top 2 has a 45% SR. often at the shorter end of town for its divs.
45% is also the SR for 1st & 2nd TAB Favs at jump time.

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Cheers.