Just my opinion, but I feel like these kind of sports are unbalanced, because our muscles are mostly powerful for legs, of course rowing is still using legs, but not much more than arms
Not a professional rower, just looked into form when I was using a rowing machine.
I'm thinking of this: https://en.wikipedia.org/wiki/Rowing_(sport)#/media/File:Avi... and if you do little legwork you're doing it wrong.