Heres a video from the GNCC this past weekend with Jason Thomas running the gopro. http://www.offroadviking.com/bigbuck.shtm
OUr local series seems similar - much faster/wide open than I expected. I'm switching to enduros this year, hoping for more single track. But it will be my first time doing an enduro, so who knows.... Cool video though!
The 13 mile track had a variety of terrain. One section was around 2 miles of TIGHT single track (no passing).