Huh... So day 1 points are given for overall standing, with placement finals of four for the bottom 12, where the winner of the 5-8 final joins the top 4 in a 5 rider final. Then on day 2 normal heat points get added to the total. Then the day 2 finals look like they begin with a 16 rider heat, which seems like a bit much... But what actually happens is that the bottom 12(?) have placement finals and get points based on the overall standing from those. Whereas the top 5 race four heats of five with a special points system, the points from which get added to the previous points total to determine the winner... Somewhat strange, I must say...