Remember, it's nice to be able to detach your suspension from the hammock if it gets wet or coated with pine sap while on a hike. You don't want to store that suspension with your hammock. That said, you can use a loop of Amsteel on the hammock end and attach the whoopie with a soft shackle. I guess that would be considered "software" instead of "hardware."
But, in order to successfully accomplish a hardware free system, one MUST stay away from Dutch's website! Otherwise, you will have a completely titanium suspension