I drove the tail on 06/28/2008 which was a Friday morning about 9:00 AM The traffic was light except dozens of motorcycles going stupid fast.
Overall the tail is way overblown as a great road. Yea, it was fun, but Arkansas has roads like that for long miles and lots more elevation change and minimal traffic.
That crash was just a Ferrari driver with pitiful driving ability.
My rule is to think of the yellow line as a concrete wall. I will not cross it ever. Same with the while line on the inside of the lane. And I keep it at 75% of limit on public roads.