My deltoids are monstrous and they were a severe weak point at one time..
PRESSES, PRESSES, AND MORE PRESSES. Lateral raises do not allow you to move significant poundages(with perfect form) and they allow for lots of cheating. I do 15 set of JUST PRESSING movements alone, and THEN go in to rear delts, side delts, and front delts. Traps are insane too, lots of heavy barbell shrugs to the front AND back. PROGRESS with heavy weight on all different forms of PRESSES(seated, standing, barbell, dumbell) and your delts WILL grow..:lightbulb:
ALSO--my REAR delts are huge from doing BACK! I do lots of WIDE GRIP horizontal cable rows, absolutely murders your rear delts with SERIOUS POUNDAGES!