Think of Pre-Stressed concrete beams ... it is a similar theory w/ tramp tightness. By tightening the tramp you are placing the "Whole" platform structure under a compression load. This makes it harder for the platform to flex torsionally ... but note it will not eliminate the flexing completely just reduce it.

Now I'll throw an idea out ... 7/16" or 1/2" Bungie cord. That is waht I have used for years to lace my Double Grommeted tramp for years. No matter how tight you lace a tramp quess what happens ... it loosens up (they ALL do). So I made mine "self tightening", and believe me it stays tight. I hate a loose tramp and sitting in water getting diaper-rash!!! And I have more beer drinking time ...

I bet a case of beer that my tramp is tighter on any given period over a tramp laced w/ non-stretch

And I do have "good" boat speed, you can ask any of the H-18 sailors in Div11 ... now if only the "idiot" on the stick could make the correct decisions!!!

Hint: Think "Needle-Nose Vise-Grip Pliers (2) pairs w/ (2) people to lace a tramp ... just once a season.
HarryMurphey
H18mag/#9458, Fleet54/Div11
P19mx w/spin /#86, CRAC