Pump speed
I have read before that alot of pros use a form of pump sets.They use as heavy weight as they can,but the reps are fast and never fully locked out or fully stretched.For years I always focused on negatives,deep stretches slow reps,and I grew.Recently I started powerlifting where speed and explosiveness is everything.Im getting strong as shit and look good but something is lacking.I have not been growing.So what I did was after all the explosive shit(board presses,box squats,bands etc),I will pick a more bodybuilding type of exercise,more isolation,and do the pump sets,like a piston in an engine.The difference is huge,I finally started growing again.The constant tension and fast speed forces alot of blood in there and it seems to be causing growth.Try it.....