Asked around on Hammock Forum as well and got a good tip on a great bracket from Dutch. Can’t believe I hadn’t checked there already! But he’s got an adjustable aluminum bracket that would work well for two of my 3 points. For the “main anchor point”, I took advantage of some metal fabrication equipment we have at work. Cut out a plate of 1/4” steel so I could weld in some 3/8” nuts.

Then I cut down some eyelet bolts so they wouldnt stick out further than needed. I mounted this plate to a stud using some 3.5” long, extra-thick structural screws. Making a plate like this allowed me to keep it “thin” enough that a standard canvas picture or painting can simply hang over the plate once the eyelets are removed.

At the other end of the hammocks is exterior 8” thick brick wall. I mounted the Dutch brackets there making sure to be in the meat of the bricks (not on a mortar joint). I used lag shields and a different structural screw to mount these.

Tested each side by tying a double length of webbing from anchor to anchor, and tightening it as much as I could so the webbing had little to no sag in it. Then both my wife and I put all our weight on the webbing. Per my calculations, this method should have put at least 1000lb of horizontal (pulling) force on each anchor. My biggest concern here was that the brick wall anchors wouldn’t be strong enough to resist this large tensile force. At this point, I’m quite satisfied that my anchors are strong enough.
and now time to reap the benefits of living room hammocking :)
