Rouletta
This is based on the repeater system, I prefer this takes advantage of hot dozens.
Tracking first 3 unique ds
6
25
5.            Leave already have ds1
16.                       1-5-3

17.                       3- win first spin complete the 3 line.   +3 units
24                     
24 ignore
20 ignore
21 ignore
8
1.                          3-4-1

35.                       
17.                    Win
13 ignore
16 ignore
8.                         6-3-2. 

8.                     Win
21
4.                        2-4-1.   

11.                   Win
8.  Ignore
34.   
35 ignore
25.                        2-6-5

1
32.        Win
2.          Ignore
26.                      1-6-5

36.      Win
2
16.                     6-1-3

12
16.       Win
33.                        2-3-6

9.          Win

Simply complete line after win leaving any repeating ds
I use 1 up on a loss 1 down on win until profit, zero ignore while tracking ,count as loss on betting!
Use whatever money management is best for you

Play the same way but for the ds not to repeat too!!
Try it at DB FREE PLAY FIRST

Wanna,
Here's the link
/https://www.dropbox.com/s/zmwixa1giyo9rsm/Stetson%20Bailey.pdf
Think it's on page 34 onwards, used in craps but can be played on any  50/50 chance

Very rarely am I ever at a loss end of session, I play to win only 5% of BR each session and compound for 30 sessions, then withdraw my initial BR and continue, the process again.
Anyone post some spin data and let's see what would happen

 
This is the way I play the DS...@dublinbet live
I first track three unique DS
Example spins.  2,23,15,27,8,19,5,35,13

Now I note these down in a three line ds matrix
1-4-3
5-2-4
1-6-3 etc....
Now two ways of betting,  either for a no repeat on next line or a repeat,so example for no repeat strategy.
1-4-3
5-2-4.    Win +3.   
1-6-3.     Win+3.
Money management can be whatever suits, i use foolproof.
Try it on any live wheel
Very basic outline of system, anyone send me some live spin data of some spins and I will show exactly how I would play it!

Most decent systems will work, the problem most people have is they play to long! That's when the wheel wins!.......I play to win only 5% of my BR at every session, that can take little as 1 spin,.........you could play 3/4 sessions a day.......that's a lot of money over say 30 sessions, compounding your BR could be very profitable

Is there a European version?

   just tested live spins from DB  failed big time 

another one bites the dust

  tested this with some live spin data from DB, after a decent start went to step 13 before hit!!
hit and run best