I'm not against the idea, but we should probably wait and see how many people and who is there. It's not really fair if someone has come from Kamloops or something and then we tell them it's only half a day after we charge them full price.
My suggestion is that there will not be a huge number of people due to the heat. I think if we make an effort to start on time we can probably just do 3 runs - switch workers - due 3 runs - repeat. Everyone will get 6 runs and we should be out of there by 1 pm or thereabouts. Added benefit we'll shorten the time that the course workers are standing out on course if we due 3 runs per heat with presumably smaller groups