I think, like so many other things, it is a matter of opinion. There are pros and cons to both sides of the argument. And in this particular case there is nothing written down that gives us the answer.
What we, as sensible pilots, ought to do is listen to all points of view, then take all of the information and come up with our own opinion.
I don't do HASELL checks before steep turns - as others have said, I can't see the point of doing a lookout turn before doing a turn. But when I brief my students for this exercise, I explain that some other people will do HASELL checks, and I explain the pros and cons and my reasons for not doing them. Then my students, once they get their license, are in a position to make intelligent decisions for themselves rather than doing what I taught them by rote.
FFF
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