A 50-unit bankroll is sufficient to play Winning Parlays . We have all heard about Martingale. The system where, in order to make a one unit profit, you double your bet after every loss, until you finally win. Eventually you would either run out of money or reach the table limit, before you could make your measly 1-unit profit. It simply doesn't make sense to risk a huge amount to gain 1 unit.
Every poor strategy has a better reverse strategy.
With Martingale we win 1 unit at the end of the progression and when we lose, we lose 512 assuming we're forced to stop after we lose 9 times. Reversing Martingale, we would win 512 and lose only 1, when we lose. You never bet more than 1 unit at a time. If you lose, you lose only 1 unit per run. Playing reverse Martingale poses some tough questions.