I still have some pictures in my album on single and double pole
method for hanging the hammock.
Risk also has a section on it at his website. He actually has an
explanation and pictures. I think he was tied to a tree root or
something similar to the firat two photos below.
The last pixels actually have TWO guy ropes from the support. That was
in pretty sandy soil and it worked fine. I used very long (12') guys
to keep the angle pretty shallow in an attempt to keep the stakes in
the ground. It worked well. Sideways motion was more of a problem with
the single guy than the double guy method. I used a Clove Hitch to go
around the stay.