Stroke length and stroke angle —or translation and rotation, if you choose to be more technical— are two of the key elements of the casting stroke. Good technique asks for those two elements to be used in the proper sequence —that is, starting with translation only and applying rotation at the end of the stroke—, what has been called delayed rotation, although my mate Bernd Ziesche prefers to say:
“It is not delayed rotation, it is rotation at the right time.”
The late Mel Krieger classified casters into two broad groups: engineers and poets. The first group is formed by those who need to know how things work in order to learn them; the other one relies more on feeling and doing those things than in any analytical approach.
Mel didn’t make any qualitative distinction between the two groups; although he himself was a poet instructor, he never dismissed those more inclined to the engineering way of seeing things. In fact he saw both views as equally valuable and complementary.