Procedure: Do one spin, then bet that dozen hit; All within the 2 unhit columns and 2 unhit streets within that particular dozen hit, (6 numbers straight up). Also put 6u on each of the other two unhit dozens.
Progression double bets for each loss, until hit.
Highest step in progression was step 6; 1-2-4-8-16-32 from the first test.
Bankroll needed 750-1000u playing with 1u bets.
First test was played with 1u bets. (Wingoal +500u)