Do you change your grip position during workouts?

[Dangerscouse]

it is the latter. I am very sure about my technique, and also quite sure that after 20+ years of cycling being almost my only sports my legs are quite more fit than my arms/shoulder could be.

That's possibly a good thing as you'll definitely want to predominantly push and not pull. It might be a slow process, but your arms & shoulders will develop with more training, although specific weight/ bodyweight training will be far more beneficial

[mjhatten]

I try to keep wrists and hands neutral -- fingers around the handle loosely and no thumb engagement. I try to keep relaxed from the waist up except for arm/trap engagement during the finish. Sometimes, though, I feel certain fingers getting numb and accentuate other fingers to give them relief.

[Ron Ginsberg]

Yes, I do. I generally row with an overhand grip with my fingers wrapped around the handle and my forefinger resting on the flat under portion of the handle located towards the center of the handle so that my two hands are close together. In all instances, my grip is such that the muscles of my finger closest to my palms are working against the force of the pull and the finger tips are lightly wrapped on the handle. Eventually I'll move my hands a bit further out on the handle so that all fingers are resting on the fully round section of the handle. I'll also move further out on the handle so that my pinkys are off the edge on resting on the end of the handle. I keep moving around on the handle every few minutes as I row. I also may slightly wrap or unwrap my thumb. Finally, on my model D I will sometimes switch for a minute or two to an underhand grip, but I don't do this for long. On my Dynamic, I essentially never even switch to an underhanded grip.

I find that these slight alterations in grip offer relief to my fingers and help with my osteoarthritis and trigger finger problems as I'm 74.