172driver,
How does doing 1 tough+go "waste the controllers' time" any more than stopping for a cup of tea? Both of them involve 1 landing and 1 take-off - but in the case of the cup of tea, there's lots of other stuff in between.
If anything, it takes up less time, ties up the runway for a similar if not slightly less amount of time, and does not tie up the taxyways at all.
I agree that it is not the "done thing", but I can't think of a good reason for that, other than it's simply not something which people do on a regular basis. But I don't think it's a "waste the controllers' time", is it?
FFF
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