This was the result of playing around with 2 strategies that didn't work out, so i played against the rules.... and that seemed to work very well.
This is a 12 numbers bet (2 doublestreets),
TRIGGER- Divide the carpet into HIGH & LOW. As soon as either High or Low hits, the *opposite side* is bet with 2 doublestreets; -The two last UNHIT doublestreets in that particular opposite HIGH or LOW are bet. IF the unbet ds hits, look for a new trigger. (switch of sides!); and bet the opposite side's two last unhit doublestreets and continue progression from there.
Progression dozen negative;
1 1 2 3 5 7 11 16 24 36 54 81 122 183 275 412 618 927 1291
For an example lets say ds 1/6 hits.(LOW) Next let's say ds 19/24 hits(HIGH). -That's a trigger (switch of sides) now the bet would be ds 7/12 & 13/18. Next Let's say the unbet ds 1/6 hits. Then the next bet would be ds 25/30 & 31/36, (since ds 19/24 was last ds hit in High).
2/2 Games won, played with 5u bets.
Highest step in progression was step 6 (7u)