My yard is devoid of good hanging tree's and I really miss having my hammock up. I've tried some hammock stands but never got a good hang. I'm thinking I need to bury some posts. My plan was to buy 2 4x4x6 posts. By some concrete and cardboard pier forms. dig 2 2ft holes, sinks the posts pour the crete and hang my hammock. Does this sound reasonable or is there a better way to do it?