Betting within your top 1-2-3 is a much better idea what it,
Sounded like was bet any runner that you rated where there,
Was a 20%=> profit regardless of order.

Try to work all your "BETS" around what your "TOP-RATED" is,
Priced then what the "MARKET" is showing in comparison to,
That scenario & go from there, this is what I always do & have,
Done for many years.

You can then successfully work out what to do with the,
Others & whether you bet or not based on the top-rated & what is happening with that & the market comparison.
I record mine in three scenarios Underlay-Overlay-Same.

My top rated is put into categories (2.0-2.4)(2.5-2.9) (3.0-3.4)(3.5-3.9) etc
Then those" CATEGORIES" recorded as an overlay-underlay-same.

When I find winning price pockets I bet sometimes,
1st rated other times 1st-2nd even 1st-2nd-3rd,
All depending on what grouping the 1st rated is in.

I would think seeing your ratings posted before that something,
Like the above once sorted should be very profitable as you,
Are betting when your ratings & the market agree and are profitable,
Based on past historical prices, really it's the only way to check.

Do me a favour, don't fall into everything has to be an overlay,
To profit at racing garbage that's one way to win "NOT THE ONLY WAY"

You can add other data to improve it especially state CNTRY-METRO-PROV tracks.

Good Luck with it.

Cheers.
Garyf.