Luckily, baccarat is more my style.
Modern roulette wins are dependent on one of two things. Blind luck of incomprehensible proportions, or systems that are essentially dependent on a player's reliance on the computational utility of Chaos Theory. This is generally considered by most people who have extensive knowledge of math to be a bad idea. Now there is always the trusty Martingale system and its offspring, but that is not so much a winning strategy as a loss minimization strategy. This is also what is called a bad idea.