I have two simple systems when I play live Roulette.
1) When playing live roulette, I simply bet on the hot numbers. Let it spin 2 times then bet again on the hot numbers. I'm sure I'm not reinventing the wheel here but it works occasionally.
2) My second strategy for roulette is outside betting. R or B and always place a bet on Zero to increase the odds of winning. I bet on the last color it hit, if it goes R B R then watch for the pattern as well.
Really simple and probably things you know already.