Just for the newbies on this site....
DFC has a reputation for posting compelete and utter bollocks with all things to do with instructing and flying aircraft.
Please bear this in mind when you read his posts.
I don't have a clue what he has posted but if he is true to form from a year ago when i eventually put him on ignore he will be talking bollocks but in a way that sounds correct.
You should treat this post as a NOTAM