If farmers don't have the time, money, or resources to care for the sheep in their flocks by keeping the wool around their anuses and hindquarters sheared down to prevent flystrike, then they don't have the time, money, or resources to ensure that the tail docking and/or mulesing (a procedure where skin is removed from the sheep's hindquarters) that's done instead is done humanely, and they definitely wouldn't have the time, money, or resources to fully inspect and care for the wounds of every sheep in their flock.