Buy some WAC's and learn to map read properly, like a real professional should!
It sounds like this is what he has been taught, what is sad is that he is about to receive a CPL and he has had no GPS training.
When are flying schools going to learn that using a GPS is part of modern flying?
How many breaches of CTA would have been avoided if the pilot knew and understood GPS?
No one should get a PPL let alone a CPL without GPS training.
This is the 21st century