here is a simple system that you can do mindlessly and drink and enjoy. Don't plan on winning much or losing much. With this you system if you want to call it here is what I do.
First you look for some sort of streak, 5 odd in a row, or 6 black in a row. I understand the roulette wheel has no memory and all the math. It's just the way I play it.
Start with a goal per small session. Lets say its three units. so you write down 1 1 1. If there have been 6 black in a row I would wager 2 units on red. The way you determine your wager amount is the outside two numbers in the 1 1 1. Lets assume you lose. your series of numbers is now 1 1 1 2. So your next bet is 1+2 the two outside numbers. Lets assume you lose again. the series is now 1 1 1 2 3. Your next wager is 4 units (1 +3). You win that wager you now cross off the 1 at one end and the 3 at the other end. and your series looks like 1 1 2. Next wager is 1+2 or 3 units. At this point in time I would look at what hasn't come in for awhile red, black, odd, even, high or low numbers and go with that. Lets say you lose. series now looks like 1123. Win the next 4 unit series (1+3). cross out the 1 and 3. Next wager 3 units. lets say you win. Your small series is closed out and you won three units.
so you went L,L,W,L,W,W actually you went 3-3 on your bets which is about what you would expect by betting redo or black for 6 wagers. But because you varied your bet amounts you showed a profit of 3 units. This type of wagering works best for what I would call choppy results where things should be around 50%. Long losing streaks will increase the units bet. Thats why I take something like 6 blacks in a row and bet red. The odds of 15 blacks in a row are pretty low.
You can play around with this before you go just flip a coin and see if you are comfortable with it. It is simple. You will also see you can go like 4-5 and show a profit...where you actually had more losing bets than winning bets but the variation in size closed things out.
GL and have fun
Northern Star