I can't say how it is at other tracks, but for Milan Dragway in Milan, MI, they have a Pro Tree there. And I learned long ago that you launch as soon as you see the last yellow light! Sure enough, every pass that I ever did there I launched on the last yellow, and never tripped the DQ.
Might want to try that is you are up against a pro tree again.
2012 Race Red GT Premium Convertible
Auto, Comfort Package, 19-in Premium Painted Luster Nickel Wheels, no other options
1988 LX 5.0 Hatchback AOD
1990 LX 5.0 Coupe 5 Speed
1992 LX 5.0 Hatchback AOD w/125 Nitrous shot
1986 LX Coupe .040 over 302 w/C4 (unfinished)