Lift if the other lane breaks?

In eliminations, if you know the opponent red lit, you can lift to save parts or to not show everyone what the car would run, or run it through to help dial for the next round.

If the opponent breaks off the line, definitely lift, as long as you get to the finish line first. If the opponent took the green, he wins if you break out because he hasn't done anything to lose yet! Even if he literally stops on the track, he can win on your break-out.

After a lot of practice, data and if the car AND you are consistent enough, it may be possible to dial the 1/4 mile based on 1000' times.

Time trials are always good for data. But if you spin off the line, running it out anyway really doesn't accomplish anything. If you spin in eliminations, don't make it obvious. Stay in it if you can do so safely and hope the other driver breaks out.