I have picked out 9 horses spread across melb, syd, bris and ade that i think will run a place. I seeking a min div of $1.40.

I'll be taking them in all up doubles to make my target of $50 profit on the day.

The way I work out my stake is

$50-0/(1.40*1.40)= Stake $25.50. You stop after you make the $50 profit.

It may need a bit of tweeking.

benny