We have video of Andrea rowing on:

• our erg
• C2 stationary
• C2 on slides
• C2 dynamic

I don't have enough experience to distinguish between the slides and the dynamic, but a stationary erg definitely feels different and less smooth than the non-stationary ergs.

Dynamic: 

The videos are on Box. We plan to analyze them with the Tracker software.

We will probably redo the videos with an experienced rower.

Wendy Davis is a political beast, and thank you SCOTUS.