Racing the stripe if you have the lead
Practice. Look at the other car every run down the track. Don’t look at the win light on the guardrail. Fender race slower cars during test and tune days. Then you can see on paper how much you took the stripe by just after you looked out the window at it.
Look at the front end of the car you are racing. Long overhang or not? The finish line beams are higher than the starting line. The 83-late 90’s Camaro/firebird takes the stripe with the bumper not the tire so you have to adjust for that.
look how long the front ends are compared to the front tire on the roadster and vet.