Floppy - I would challenge you to work out how to configure my "simple" TB20 autopilot to fly a coupled ILS, and this statement is true even if you were a current serving Boeing or Airbus captain. And yes I have tried it with both types and neither could work it out. They didn't have much trouble, but neither had the slightest hope of working it out for themselves. Simple, but much too equipment specific.
Somebody less than fully trained would have absolutely zero chance of working out how to set it up.
Manually, on a good day, can't see why a visual landing could not be pulled off by somebody not type rated.