Hey Matt... what Rick says... remove brain, but I remember my first run (oh so long ago...), I got to the first line at the end and thought "ah, thats it, I won on my first run"... and then backed off, I got beat....
There are 3 lines (this was 24 years ago), the first and last were for measuring your speed and the middle one is the actual time mark, but really, all you need to do is just keep the throttle wide open.. and have fun, see you Saturday.
Cheers
Reg.