yes, i was saying to tie to the bottom of the swingset, but it would work to the top as well. this is basically how folks have hung from 2 ski poles at one end of the hammock, works for 2 pieces of deadwood, anything that's strong enough. you can even do it with one support like risk does here:

http://www.imrisk.com/hammock/singlepolehammock.htm

it just doesn't sway side to side if you use 2 of them.