Well how long is the full monty? The ACS courses I've seen are thousands pounds but only 5 days. And you come out a course cowboy and a shiny card to work on someone elses supply for money.
Also how long does it take to learn how to check a system for tightness and how to use an FGA? Not long.
Also how long does it take to learn how to check a system for tightness and how to use an FGA? Not long.