So very useful to see the behaviour of this bet.
All the warning signs are there, that there may be some very stormy losses, especially when the edge is approached too close for comfort several times.
This is the perennial problem with progressions for a bet that has no winning edge.
With a losing bet there is no solution by any progression, and the decision is where to draw the line and then go into the mathematical mind of Martin Blakey to see how in most cases a way out can be found, and I have already alluded to a few approaches.
As he has written, whole sessions can go with no need for complex progression or retrieval from a hole, and as we see with those first 3000 spins tested, and some that I have published the way forward is easy by being fortunate enough ( lucky) to encounter mainly win cycles.
However, there may be others sessions where the direction is down and direct, and only a stop loss can save total catastrophic loss thereafter the entire session and possibly additional sessions may be necessary to continue the retrieval of RB.
Worst case scenario, and depending on the size and scale of the RB, there may simply be a risk bank loss and yes MB did encounter that at times ( although he did not mention that in his published work). I think it was Jason Chan who advised me that as he often played with MB live in Melbourne, he saw RB losses from time to time. That is most helpful to know, and of course very sensible. I believe the losses were usually in the order of 1000 units at $5 units. They were rare but did occur, and in the medium and long term MB was a winner, and a professional.
Even with a bet that has a proven positive edge there will still be corrective cycles to deal with. The really smart way is to step aside and dodge the bullet, which I sometimes refer to as my 'toe-in-the-water' technique. I often find that within 20-30 spins the flavour of a session can be forecast. Sometimes it is wiser to walk away with a small loss.