I'm really shocked that the commercial fraternity ( that I am part of) takes this odd arrogant attitude towards this thread. In times gone by when I was instructing I used to let my students make a practice pan and it was very satisfying to see their genuine appreciation of how wonderful the DD service is and that it can really save a##es if they get in difficulty. It gave them that little bit of confidence to move forward in their cross countries etc.
Did all you arrogant s...bags never start at hour zero and have to learn!
Whenever DD was busy, they politely told us to go away and the student then had a graphic demonstration of people using the UK DD for its intended purpose.
I still stay in contact with some of my students and I know that DD has got at least one of them home. Nuf said!