Another innovation that I'm not sure what to think of, but since I like to stay open for new ideas, I wanted to show it to you at least. The idea is that your wrists can rotate freely against the shaft, so your hands can stay in the same position as the paddles moves.
They have two versions. One that comes as a set of 2 mounting handles that can be used on any paddle and one that are integrated into a special paddle.
Link:
www.obliopaddles.com/