So here's the quick and dirty description of my hammock stand. The design is basically available all over the internet but I've included post-it notes showing dimensions. I used 6" and 10" long 3/8" carriage bolts with nuts and washers and eight 2×4 studs.
A couple of tips I forgot to do early on was the four bolt holes on the bottom stud should be drilled first because the drill bit wasn't long enough after the fact. Also, I miscalculated the length of the support arms and cut them down after assembling them.