[BerntR]

Patrick,

When I Swing a lot of balls, the only thing that gets anywhere near sore is my Left Hand. And the only thing that really gets work-out-tired is my Left forearm. Not because I am very active with the Left Hand, but because it carries the major part of the load.

When you say that both your arms get sore and tired I take it that your pivot still has room for improvement. At least if you aim for swinging.