This is a Doubledozen bet. What i've noticed is that when a repeat happens, more than 2 repeats is a rare event, atleast rare enough to make profit....
TRIGGER- Wait until a dozen repeats. Now, bet against it, that a 3rd repeat will happen.
Progression: Any doubledozen progression, i used +1 progression from my tests (+1u for each loss, keep bet for the next trigger, reset only when recovered)
First test was played with 5u bet wingoal +100u