Since the subject has arisen here's my solution.

There are a fair few things to take into consideration when contemplating making a hammock stay off the ground. You need something at each end that will hold it up, you don't want it to be too heavy or else you may aswell take a tent, you need something to create outward pressure to counter the pressure of your weight pulling the ends of the hammock inward and you need to make sure that the whole setup is not going to topple over sideways....