Develop a strategy. Never make the classic mistake of betting more than you can win. This player lost checks, but looks like a winner. Learn the numbers on the wheel. Spreading would be taking numbers that are in each quadrant of the wheel.
Dealers sometimes get into a rhythm and the ball tends to fall into the same quadrant.
If you see this pattern, bet that quad. A table with an electronic number board can help track repetition of numbers. Pencil and paper still work fine too. Always bet the last number that was hit. Back to back hitting of numbers seems to happen quite often.