We honed our yaw dampening skills using rudder on cargo flights. Better the correct rudder input than no input when the YD became U/S. It could become quite hard work using aileron/spoilers to try and dampen the dutch roll, not to mention the increase in fuel burn and passenger discomfort. The book method is legal a**e covering, along with x-wind, non elimination of drift before touch down.
You would be surprised what abuse cargo would take and not a sick bag in sight.