Double hinge.
I use that or triple hinge on bad sideleaners.
If you make the hinge too thick, it'll lose the ability to flex and simply break instead.
By making vertical relief cuts you can turn that big block of hinge into what is basically 2 or 3 hinges working in unison.
Some one showed a video of a big cottonwood being swung with a triple hinge and I simply had an epiphany, as in: " Why the hell didn't I ever think of that".
I have been using it since, always with success.
Vertical fibers is a must for this.
This was an ash with really bad sidelean and fortunately also some frontlean.
It was leaning over one of the oldest chestnuts ( Castaneum) in the country and the owner of the castle would have been rather pissed off, it that one got squished.
It worked so well that after dinner the whole bunch of us left camp and went out to sit around with a beer and analyze it.
Turned the whole crew into triple hinge born agains