This is a simple exercise that gets over-complicated, you do the movement in the scapular plane. That means the hands are somewhat in front of the shoulders, whether that is 10° or 12° or 17.958°, it does not matter.
The movement should feel natural and comfortable, if all you feel are the traps, you’re probably using too much weight and too much momentum
Tilting your pinky up does not do anything, it is one of those bodybuilding tactics that is not based on any sound evidence or science. Keep the hand in a neutral position
This exercise also works the supraspinatus of the rotator cuff. You should be doing it regularly in your training.
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