Some time ago, I played with BV nozero roulette.
The strategy was very simple, used a trend bet selection and John Patrick's regression.

Bet selection
When I started sessions waited for 2 different dozen , and Play That they repeat, Play That 2dozens till  lose. In this way we play each spin, because if you fall out sleeper, we have 2 different last dozens.

Regression
We go up when we win
4-2-3-4-5
  when we come to 5 units and the win, session is over
stop lose is 3 attempts, if the lose 3 times first bet ,end session.

To my surprise, after a few thousand spins, BR was positive.
I do not think this will continue in the long run, but the results were very interesting.
I do not play this strategy further for lack of time.

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