Welcome to the Forum, Mac,
Here is a lay staking approach that helps keep things in check.
It also ensures that one does not over bet the shorter prices, where most of the winners come from.

Lay Bet Staking.
1% of bank if priced <= 5.80
.5% of bank if priced 6.00-11.00

This allows for 22+ outs in a row.

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Cheers.