I must have blinked and missed the origin of this 'no touch and go' stuff. I'm reading it in quite few publications, probably partly because they all re-cycle the same material. While I concede the T&G sequence is a bit artificial, being able to quickly reconfigure the aircraft and cope with the resulting trim and other changes seems like a pretty basic competence. And I, for one, was grateful for those extra circuits on my limited, self-supplied student dollars, especially when moving to Mooneys, PA24s, etc.