Re: the gu rappers etc - it did say in the race instructions that people would be disqualified for littering, but this is a bit of a hollow threat if you can't ID people. There's been mention before of rear number plates for under seats as a solution. Not sure we really want to turn these events into a police nanny state of dobbers, but it's not fair to expect the organisers/locals to spend a week cleaning up lazy peoples rubbish.
I was thinking about biodegradable markers for keeping people on the right track - you could use something like white flour to mark off tracks that are the not used. Personally I thought the track was very well marked and the marshals were great, but a friend did manage to add an extra 8 km to his race by following a numpty who missed a marker, and I saw someone ride right past the marker pointing us back into Cammeray Waters at the end, which was well signposted if you were looking.
Anyway, I had a good race (only did the 50km) considering the amount of training I've done. Made it under 4 hours, which put me in the top 25% of women, which I was pretty happy with. There's some awesome single track out there - big cheers to the trail builders.
The only downsides were the conga-line on the single track in the first 10-15km, this section would have been awesome with less traffic, but the riders who were holding people up here were the ones who blasted past on the fire roads, so I'm not sure of the solution to this. I played leap frog with one guy for about 15 km, he'd hold me up on the single track (which is a fair effort cause I'm usually the wuss on the technical stuff), then he'd blast past on the fire road climbs.