Wait 4 spins and then bet on the last 2 Dozens. Wait again for 4 spins and bet on the last two dozens. Keep doing the same thing. Do the same with Columns. Compare losses with winnings after 100 spins.
What's the idea here? Since you can't really win betting every spin on the last 2 Dozens, or on last 2 Columns, chances are that if you only bet only after a few spins that you will hit the last 2 Dozens more often than if you'd be betting on them all the time. Hopefully i'm right in my assumption. Where is the math guy?
If this works, hmm, maybe a progression could fit in here?
Just tossing a thought in here.