Well done Evaj.

This is a method of staking one may like to experiment with ,using a dry run first.

Say our base bet is 1 unit on a 200 unit bank.

Now divide your assessed price into the 2nd runners assessed price.

That resulting figure is then multiplied by the base bet of 1 unit.

Example
Top rated accessed price is 2.00
2nd Top rated accessed price is say 3.50
2.00 into 3.50 = 1.75
1.75 x 1.00 base bet = O/L 1.75 units

The idea is to take advantage on the accessed price's , price gap.
The bigger the gap , the more that is put on.
Up to a max of 3 times the gap difference.
Meaning that a max of 1.5% of bank is ever made on a strong chance Horse.

This can be a powerful technique of maximising profits if all goes our way on the day.

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Cheers.