Here,s one for you Bgahwan.
Its called" Martin Gales Infallible Betting System"

List the Race times of all Race 1 horses in time order.

At 5 Minutes to the jump bet the Fav.

When it Wins Double up the stake on the next horse.

Only go for 2 races then recommence at original bet.

If the 1st bet loses just put the same stake on the next horse.

I bet you it does better than the 4% profit $300,000 one.

darky