If we set the on line casino at 50 autospins flat on an EC, come back and find us in a few profit, run again and if we are a few back, it is in my option best to try Grand Martingale. Up on a win. This step progression works only in such case. 1,3,7. three wins in a row to recover 11. If we spend 40 spins until a recover we are back 51 units. On a run of 5 we are up again.
on a 1,3,7,15,31,63,127,254,516. Only if we are back 1000 spins/units we need a run of 9.
We lose a chip a spin, using a more conservative way is normal Martingale, cost is 1 unit an attempt, but needs longer run to recover the loss.