but to answer your question, yes you should do what is more comftorable but i play that with all downstrokes, and I do it with just small flicks of the wrist whilst my elbow remains motionless, do this by finding the zero point between ample palm-muting and your comfort zone, and use that as your pivot point and make as small strokes as possible but still put the necessary strength behind each one, speed and endurance will develop