In article , Sam Spade
wrote:

And, what are the odds of having to hold at an NDB in the 21st Century?

Essentially zero. But, if your instructor (or flight school) is dumb
enough to send you for an instrument checkride in an airplane equipped with
an ADF, you may be called upon to demonstrate one. Which means they need
to train you to be able to perform one. Which, of course, is a huge waste
of your time and money, since it's a skill you will never use again after
the checkride.

Which is why, earlier in this thread, I said:

But, the real way to do NBD holds is to tear that piece of crap ADF out of
the panel and train in a GPS-equipped airplane. If your school doesn't
have GPS in their trainers, find another school.