I use 6x6x14 posts in my case and set them for a diagonal hang across the deck corner with another post in the yard
Pics show my winter hammock tents setup and being mocked up

Kitimat-Stikine B-20160409-03547 by richardktm300, on Flickr

Kitimat-Stikine B-20160904-03786 by richardktm300, on Flickr