Just a FYI...I spent the last couple of days trimming back the spine area on the 69er (approx. 3 or so hours). I did random spots before the log rides and a couple random spots after the log rides. The most significant chunk of time was spent on the section that spans from the bridge crossing heading north to the switchback climb (the spine area). This section was severely overgrown to the point where you could not see more than a few feet down the trail. After this "haircut", the trail should provide more consistent speed & flow because the line of sight has been improved tremendously. More trimming may be needed further north of the switchback...I will ride it tonight and see.