I set a metronome inside my mobile to 1 sec vibration thought to use it for VB2 mostly for rotor.
Strangely the dealer was spinning rotor at 8s/r (very slow) so first I used old way to observe ball with 1 s time intervals.
If I observe at 12 o clock diamond CW direction ball first vibration 12 next one passing 12 since the ball makes more than one rotation in time period of one sec.
When the ball drops close to 1 sec per rotation hardly can see any movement, as once it vibrates at 12 next time the ball is 3-4 cm in front of previous position. But very next rotation the difference was 5-6 pockets. So I used it to predict at that moment. It turned really good better than expected. Since the rotor was so slow there is not much difference even if miss one rotation.
Next dealers were spinning about 6 sec rotor still good. I start getting trouble with 3-4 sec rotor since this was a Cammeg Connoiseur (one with a reasonable ball) but at that speed range they can get strange bouncing.
Also interesting is that in ACW I played ball jumps about 20-25 pockets in CW without jump.