OK, I've now added an extra spoiler to the Race Submission Evidence section which contains a complete set of screenshots for an example run including some extra hints on when to take them and what to include plus a calculation of the final score.
As the sun rises (sets?) over Pippin Beacon there's just time for one final sweep of the course to clear away any debris from your test runs but otherwise all is peaceful ... the deep breath before the plunge!
Good luck everyone, and may the best Zombie hunter win!