Why all the extra hardware?
Why not just use a simple continuous loop (or dogbone if you prefer) that's larksheaded onto the hinge and clove-hitched around the toprail with a loop hanging down for your hammock attachment point?
Or am I missing something?
I know TDSes don't care about weight but I still don't want to buy unnecessary materials.
Keep it simple I say...
So many trees, so little time...
We follow where the Swamp Fox guides,
His friends and merry men are we;
And when the troop of Tarleton rides,
We burrow in the cypress tree.
The turfy hammock is our bed,
Our home is in the red deer's den,
Our roof, the tree-top overhead,
For we are wild and hunted men.