I read this with interest its just like a 3 step martingale in roulette .ie you wait for a 3 colour sequence ie black black black ,to mimimise bankroll bet 1 1 unit lose bet 2 2 units lose bet 4 units lose walk away wait for next sequence .If bet wins at any time wait for next sequence .But with racing all bets finished for day .But if you are up and there are selections at other meetings cant u have a little punt????????????answers on a post card?