The force in the bow will align YOU, YOU do not align the bow! Your bow hand must allow bow movement to stay aligned with the string and the string will align your string hand IF your string forearm, wrist and hand are RELAXED. Let the bow do it, DON'T YOU do it.
Move 2 bones, the upper string arm (humerus) and the string side shoulder (scapula). That upper arm is attached to the shoulder so it acts like the radius of a circle so the label of "rotational." Shooters often try to make things happen when ideally they should ALLOW things to happen. Let the bow do the work! Just move your bones.
And YES!!!!! a light weight bow will teach this much faster than a hunting weight bow! Like 20# or so light.
Arne