@Viperzed perhaps move the 1hr round so that majority don't miss it, and put in a second sprint round for R2?
I'm not adding in a second sprint round, it shakes up the results a lot as it is, a fun novelty but you absolutely can have too much of a good thing. I'll consider my options with the one hour round later on.
in. by the looks of round 2 everyone should be taking their gear with them and meet up at the 12 hour and have a mass communal race.