So far i've tested 445 spins from an american wheel and i'm up +208 units.
Highest bet was 5u.
How to play:
Wait for a Dozen to show up twice in a row then play 3 streets belonging to that Doz.
Bet only 2 spins (win on first spin, stop).
Pick the 3 streets that hit most recently.
Progression (16 steps): 1,1,1,1,1,2,2,3,3, 3,3,3,5,6,8,10
Example:
12
34
14
16........trigger
0L-3
15W+6................wait for a fresh trigger
2
0
13
33
25.........trigger
17L+3
5L+0.................stop and wait for new trigger
10..........trigger
12W+9.................stop and wait for new trigger
23
17..........trigger
21L+6............not one of most recent 3 streets from this dozen
30L+3..............stop and wait for new trigger
16
34
34.............trigger
6L+0
27W+9