Around here I notice 2 types of extremes:
People who ride their sportbike like a dirtbike, keeping their upper body pointing straight up, crossed up over the bike, and their inside albow is almost locked becuase they're using it to push the bike down to the point where it's dragging hard parts even though they're not going very fast. Then there are people at the other extreme who shift 100% of their butt off unlike the 50% they're supposed to, just so they can drag an elbow for the photographer.
Then they wonder why the bike gets upset and almost highsides when they roll on the throttle at the same time that they try and pull themselves back up onto the seat.