I call BS on the whole tramp tightening issue...
...We all know even a super tightened tramp will still give & deflect lots when we crawl over it...thus there is always more stretch to be found from the cloth.
Search and read "Law of Sines". Its aplication on tight ropes or tramps is quite simple:
A tight stay keeping the mast up is, however, easily deflected by an orthogonal force. Likewise, a tight horizontal tramp is easily deflected by our vertical weight.
Unlike the stay, the tramp is not the only thing holding the boat in one piece, but a tight tramp makes a difference on horizontal plane stiffness.