Hold one side in an isometric contraction while the other arm moves through a dynamic (concentric and eccentric) movement. You then switch sides.
This simple modification not only helps you to create a new training stimulus, it also creates muscular overload by increasing the time under tension (TUT). By increasing TUT, you increase metabolic stress, a key mechanisms for growth.
I've been called a wide variety of names over the past couple of years. These names have ranged from "guru" to "cheater." Frankly, I don't give a damn what people call me. The bottom line is that I get results with my athletes.