BOAC wrote:
... one of the major problems being the loss of airspeed going from a headwind to a tail ...
There's no loss of airspeed turning out of a headwind to a tailwind. If there were, you couldn't fly a 360 at height without constantly changing attitude to maintain a constant speed, 'cause there's head and tail wind there as well.
However, if you turn back in these circumstances your groundspeed increases markedly (by 2 x windspeed once you've completed 180 degrees). As all this is happening close to the ground, and is thus
very noticeable, the natural tendency is to pull off the apparently excessive speed. Result, tears all round.
At height you don't notice the
apparent speed change in relation to the ground, and so this doesn't happen.