Somewhere in my past - heck, it might have been before I was a pilot - I remember being admonished to never push or pull and aircraft around by its propeller.
It stuck with me for some reason and I've never done it, grabbing the vertical stab, wing strut, flat handing the cowl to push, or in the case of my Nieuport, just grabbing the horizontal stab supports, lifting the entire tail, and walking it around.
Yet I see guys pulling their planes out of hangars or pushing them in by the prop all the time.
Was that just some folksy wisdom, or was it correct?