You don't bet on 10 numbers but 3-5.
Only morons like Hourmouzis tells you to bet on 19 numbers because their computers predictions suck and therefore the scatter is wide.
You always bet on the top of the peak, so that even if conditions begin to change and the peak begins to shift, you are still betting on positive edge pockets, contrary to 19 pockets where some and more of them would become negative edge.
On this video, Forester is using accuracy 4, meaning you receive the prediction lately at around 6 seconds before the ball falls.
Depends on casino conditions and when NMB is called, you can use Accuracy 3 and receive the prediction at around 9 seconds before the ball falls.