Vince, I can't seem to feel my side head of the delt work when I do standing lateral raises. I try turning the wrists but as the weights get heavier, I don't seem to be able to isolate the side head. Any suggestions?
I recommend you do the lateral raise seated. This is my version of one of the fastest developers of the outside head of the deltoid. This movement cups the lateral strand and brings it to prominence.
Here is how to perform this great movement.
Sit on the end of a flat workout bench with a dumbbell in each hand. Lean forward from the hips and touch both ends of the dumbbells together under the thighs; always touch all four bells under the legs and keep the upper body in the proper position to keep the stress on the lateral head.
Hold your forward position of your body as you raise the dumbbells upward to head height. When the dumbbells reach head height or the top of the movement, be sure the back of each bell is higher than the front. This insures the side or lateral strand of receiving maximum stimulation. Try four sets of 8-12 reps, with no more than 30 seconds rest between sets.
(Musclemag Magazine October 1988)