The opposite of Trend Following: you are looking out for streaks of the same outcome on the so called 50:50 bets.
Again set a starter number, say 4. Any time you see 4 events the same in a row on the even money bets (red/black, odd/even etc), you bet on the opposite outcome.
Again, remember that every spin of the wheel is an exclusive event and the wheel has no memory. Frustrating, isn’t it!