Here is a Lay Method that has a good success rate.

Stopping at the first qualifying selection for each venue.
e.g. 6 venues = 6 selections.

Target a Tipsters top selection.

Must not be the market Fav.

Must be 5.90 & less.

Stop at that venue for each qualifying selection regardless if it wins or loses.
Do the same for all the other venues.

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Cheers.