Tamino,
can you please share the 2 dozen, single zero wheel progression/regression
Due to my location I am very familiar with the 0/00 wheel and as WASHOO2 have created this particular method.
To answer your question about progression for dozens on the single 0 wheel I cannot give you a straight answer.
In preparation for play at the single 0 wheel if the occasion ever arises ,I have chosen to Flat bet the First and Third dozen.( This happens to be also known as the James Bond method)
For recreational purposes only. Play at your own risk.
Tamino
aka WASHOO2