I'll have another read while trying to trace things via Gmaps.
I tried to do a googlemap (didn't take GPS with me so no tracks to use) but it wouldn't let me join up some of the minor roads - insisted on doubling back and taking other roads.
Another video from Sunday: http://banditrider.blogspot.co.nz/2015/05/nevs-video.html
More video, including Nick's crash: http://banditrider.blogspot.co.nz/2015/05/more-brr-video.html