the constantly moving seat

G'day Playmates

Some of my network of spies out there in the big grown up world have told me
that the modern technique now being fostered by international coaches is
that of "the constantly moving seat". Now I fully understand the debate we
had recently about the seat moving constantly at the catch, meaning that
there is a finite period of time around the catch during which the seat has
constant acceleration towards the bow, so that its sternward velocity
decreases and turn bowwards with only an infinitesimal moment in between
during which that velocity attains zero.

But I'm being told this should happen at the finish as well. And that the
extraction should happen seat prior to the infinitesimal instant of seat
reversal, with the hands punched fast away past the knees before they begin
to rise.

My simple question is, IS THIS BOLLOCKS?

I wonder what The Great Man thinks?