This plan is based on the assumption that one normally picks more shorter priced winners rather than longer priced winners.

The O/L varies dpending on its price at jump time.
The percentage is the current bank figure, NOT ucing the outlay due to bank reducing
e.g.with a $100 bank you would work a percentage on this amount , for the whole day, win or loose.
$2.00=6%
2.50=4%
3.00=3%
3.50=2.4%
4.00=2%
5.00=1.5%
7.00=11%
10.00=0.7%
12.00=0.5%

It could be looked as a more controlled version of level stakes betting.

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Cheers.