There was a recent thread concerning a 2.2mm Zing-it continuous ridgeline breaking.
After much discussion here on the forums, it was generally agree that there was no way the material would break for wind stresses. We agreed that the probable cause was the wind aloft moving the trees and the two trees that the ridgeline was tied to, move away from one another. Since there is zero stretch in 2.2mm Zing-it, something had to give.
I realize your question centers around small trees giving way to the hammock load. But, the same solution of putting in a small section of shock cord my fix both problems.
Of course, I can't find that thread now, but it occurred about a month or so ago.
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