I had an idea (which someone else also had, and posted a video on YouTube) to put some PVC pipe in the ground (with quick-setting concrete) that I would put 4x4 or garden rail posts into as supports. When it's time to mow the lawn, I simply pull out the supports and cap off the PVC pipes. My goal is to be able to hang up to 3 hammocks at the same time, with two possible sharing a post at the same time.
Has anyone tried this? Would the rail ties used in garden beds be strong enough? Any other considerations I am not thinking of?