Originally Posted by
50PlusCycling
Rollers aren't much good for bike handling skills, but I find they are great for finding and workout out dead spots in my pedal stroke.
Someone (maybe RChung) posted test results a while back that showed that current pro-level riders have a choppier pedaling style than amateurs, which I would guess just reflects the difference in average power levels between the two. Pedaling smoothly goes out the window at high power levels.