Woof43.
How do you decide how much money to invest in a Race?

I'm not betting in the first 3 Races.
That leaves 8 Races.
My study methods leave me with a Market framed and my wagers are based on that Market.

Should I be betting a larger amount when I find a Large Overlay.
Or should I bet a larger amount depending on how confident I am about the accuracy of My Market.

Or do I need to keep records of my Markets and then back test on what sort of Wagers would have been most profitable , and try to find some sort of pattern regarding race distances , tracks and Grade?

I find the researching incredibly tedious and boring.
Maybe I don't want to know what I may find