J.D.,
I wouldn't be too quick to give split timber shafting a C+ on the Primitive scale, considering that the oldest arrows in the world (11000BP), from Stellmoor, Germany, were made from split pine, and the same technique was used on the world's second oldest arrows, too (from Mesolithic Denmark, and of pine and birch). For all we know, split timber shafts predate shoot and reed shafts!
Now, router fixtures have been in use only since the 1920's, I guess, but even that is still more ancient than the plainest fiberglass longbows.
Tuukka