i recall a system 25 years ago that was based ont he 3rd/4th favorites.

the key was to bet them until you got in front and then leave the course.
then start again next week or whatever.

ppm or someone like that decided to try it continually and it failed.

at some point the winner will turn up but grab the money and go home.
each day was a new project and only until a profit was reached.

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laurie