Huh. Looks like hammocks are getting lighter. e.g. https://www.rei.com/product/115038/k...80150_dff91461
Now, something like this, sleep flat for two (instead of one) http://www.jacksrbetter.com/shop/bea...ridge-hammock/
But it looks like the technology is getting better and lighter.
Still not seeing ones that are lighter than a tent, allow for side sleeping, etc.
But I have seen enough to start looking some more.