I have the same question. I think the only real way to know is practice. What hooks at 8 pm spins like crazy at 9! For me, be real attentive lining up in the staging lane where the rubber is darkest. Brake torque to desired rpm, some nights its 2000 and some its 1500 depending on the tract prep. When its time to go, let off the brake first and after moving a few feet squeeze the throttle down as fast as you can without loosing traction. On my PS2's I need to be moving pretty good before going full throttle or you know what happens. When you get it just right, you will be 2 tenths faster than when you were too careful. But what do I know, I've only been to the track 3 times. But I rewind and replay what happened everyday so I've been down the track hundreds of time in my mind.

Les