read this on a racing forum 5-6 yrs ago , tried it several times where the surf meets the turf
never lost $$
watch the board and bet the closing fav to Show , if you collect start over , if you lose Martingale , start over from the beginning when you cash

watch the board and bet the closing fav to Show , if you collect start over , if you lose Martingale , start over from the beginning when you cash
