[slickrick216]

The move slowly thing is likely to account for jerkiness as a thing people do is rush up the slide and wait at the catch position. You want to get to the catch without the inertia of being forced forward so you can raise your hands get ours in and then push. From a physics perspective there’s also the possibility that rushing up the slide forces the stern down faster breaking the about however that Varys massively and I don’t know about it being proven.

Regarding the order of operations after the catch that’s because a stroke is similar to power clean sitting down. You are effectively maximising the lever arc.