We all know that if you spin a roulette wheel 37 times each number has an equal chance of appearing, and we all know it never does, never has and never will!
One of the automatic alerts in Roulette Key Gold will always show you how many numbers haven't been hit and will alert you when this number reaches 12 usually after 30-50 spins.
I call this the 'secret' or 'hidden' dozen it usually but not always is hit within 3 spins.
In the video below it hits on the second spin which gave 12 units profit.
I try and refrain from using a progression and will give up after several spins. A win on the 3rd spin would break even on the 4th a loss of 48 units.
After some comments I'd recently been testing the withdrawals at BetVoyager which were ok for me so I've run my demo there.
As I was at BetVoyager (no Zero table) I had to bet every spin so I used a Safe(ish) beginners method (VII) in Roulette Key Gold until the 12 unhit numbers appeared. I was waiting for 12 neighbours but BetVoyager is a bit slow and it didn't occur.
Still after 29 spins I was up on the Beginners method and in two spins the dozen came up, which I have to admit is fairly typical.
So without my program RouletteKeyGold you would write down all the numbers (0-36) and tick them off till just 12 remain.
See video at:
http://youtu.be/VkbPNhv6iIc