Well said Chuck. Also the best people to teach how to do these things are those who have actually done them in the real world. And for the longer the better. 100 hours in a Dak does not make an accomplished Dak driver. At 1,000 hours most intelligent pilots would be getting the hang of it and would have had time to see a few of its peculiarities. And yes, there are some important differences in techniques and care of these beautiful old things between Arctic, desert and mountainous wet tropics.
I was privileged to experience all three environments in modest doses.
At only 3,000 hours on type, I dips me lid to the Larry Blackmans of this world - 25,000 or so hours I believe he had on the old girl.