I know this is not hammock related, but I just had an idea!!
I've made wooden bows before and made bowstrings, but I just thought, what if you used Amsteel/whoopie sling for a bow string? Super strong, and easily adjustable to get the right brace height (which is the distance from the grip to the string)
I haven't physically seen Amsteel yet, so I don't know if the diameter is small enough for a arrow nock, but it should be.
Just something I thought of to spread ideas from hammocks into other aspects of life.