On my scap shrugs, my elbows keep going ever so slightly soft at the bottom.
It feels like it's mostly a coordination issue or muscle activation issue rather than a strength problem. Somehow when I retract my shoulder blades it's like the "keep your elbow locked" muscle shuts off.
This happens even when do shrugs on an incline or against the wall, which is why I'm thinking it's mostly about keeping the right muscles activated.
Any tips or suggestions about how to perfect this specific part of the movement? Is there a scaled down version to practice elbow lockout that I can do in addition to the full reps I'm doing in my Upper workouts?