I gotta comment on this statement:
"In US navy studies of motion comfort, about half of the people in the studies preferred a slower roll through a wider angle, and the other half preferred a perhaps snappier motion through a narrower angle".
I''d like to see the boats those US Navy studies were taken on. I seriously doubt they were on small sailing craft anywhere near 32''or at sailboat speeds. If done on ships it makes sense...big slow rolls take 5-10 seconds on a ship and are less agreeable to the crew than quick short rolls.