An observation about the RoundRow:
You talk in the videos about the difficulty of getting the timing right. I actually find the round row the most natural movement of all on the RipRow. In fact it is hard to straight row without reverting to RoundRow.
This I think is because I have been XC ski racing since I was a kid. Hip hinge followed by arm extension is the essence of double poling, which is the foundation of both classic and skate ski racing.
Here is a video that has some full speed and slow motion footage. It is something you feel more than see, but the arms stay locked with a 90 degree elbow bend until the hip hinge is almost done, and THEN the arms push to complete the motion. Maybe a useful analogy if you are teaching experienced XC skiers.
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Thank you for sending this. Very cool. I love how most sports use similar movement patterns.
Rip(Row) it up,