Quote Originally Posted by deeaa View Post
The trussrod ends well before the 'guitar portion' of the neck, i.e. at around like 14th fret or so, so it simply cannot affect the 'heel' portion of the neck which will always stay at the same set angle with the body.
AFAIK, that's not quite correct. Think about Fender necks and acoustics that have the adjustment at the base of the neck, indicating that the rod runs the entire length. But the effective range of a trussrod ends where the neck joins the body because of the structural rigidity of that area and above.