It is really hard to rotate watches...

Professor

Due to my gimpy wrist rotation of watches for me depends on which band fits most comfortably on any given day and I often find it best to switch out to one looser or tighter fitting before the day is over. The flesh of that wrist expands and contracts quite a bit without a clear cause though it expands most when I do any manual labor or on hot days. I suspect its due to lost adipose tissue that otherwise acts as a filler and cushion. Without that natural filler dilation of blood vessels is much more pronounced.

I'm considering making a web/fabric band with a infinitely adjustable buckle similar to the buckle of a military web belt.
I recently tried out a length of nylon webbing with velcro that showed promise.
I ran across a NOS band of a type I've never even heard of. It was an expansion band completely covered by a leather sheath with a bellows look. Unfortunately despite being unissued and never worn you could see that the thin leather had degraded in storage.