My understanding from a few 747 jocks of my intimate acquaintance, is that the received knowledge was to never transition to a slip upon landing, rather, let the undercarriage sort it out. All of them privately acknowledged that they kicked in enough rudder to make the landing more or less in line with the centerline in actual practice.
Two of the three are now retired, but still active GA pilots, and the other flies for a global cargo concern.
none of them ever dinged a 747 as far as I know.