That might just save so many lives one day but what really bugs me is the fact that these techniques are not mentioned anywhere in the training manual or the supplementry procedures..
Well: back in the 80s, the manuals from Boeing for the 737-200 which I was then flying had lots of general advice (not just QRH checklists) on non-normals, all subsequently removed. I believe this was at the behest of the Boeing lawyers, who claimed that the company could be sued if an event went sour after a crew followed the advice. For example, there was a long text on partial-gear landings, including (IIRC) figures for how far you might deviate from the centreline if you landed with one main gear locked up. The lawyers won their case - but did it improve safety? Not in my view.