Hello . . .

I like Simple Systems.

I have expanded it to include all 3 EC (Even Chances).

Attached are two Excel Trackers/Testers for your use in exploring this short term attacking method.

It is set up for a progression of 1 on the first attempt and if it is a Loss then 2 units on the second.  You can easily change this to a Flat Betting by changing the "2" located in Row 6, Column AY to a "1".

I have included 2 Trackers, one the Manual Version for inputting your own numbers and the second for testing with Excel's RNG.

Cheers .  .

Nick