Mike,

Not a criticism, but a help.

Your filters actually make more of a loss than backing all favourites without those filters.
I'd suggest looking in other directions for filters than just the obvious one's.

Based on your rules there is a loss of 14.73% at tote prices.
I assumed similar distance to mean +/- 200M.

Quite honestly, you'd be better off picking out the shorter horses on the card and putting ALL your efforts into getting the best possible price you can.

Hope this helps.

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