hammocks are actually amazing for your back! if you want to learn more I highly suggest going to /r/hammocks. Very friendly and active subreddit. If I were to suggest a cheap, easy, foolproof set up. i'd do this. Hammock, Straps, people may say go with the kammok roo python straps, but some parks are super choosy on what can be hung on their trees. And heres a tarp that regularly gets down to $20 on woot.com.