Ah yes....but if you could swing in the trees in a ultra hammock?? lol
Who honestly calls a fabric Ultra. Marketing people thats who
Saying that pretty sure I've read comments on hammockforums of people with spinnUL or cuben fibre hammocks. AFAIU the problem with the material (other than the cost) is that you can't really sow it.
Heres a cuben fibre hammock tarp, weighs in at 136g. The tent is 560g. Tarp plus single layer hammock is going to be very close, the one unsponsored made in pertex (with stuffsack) was 387g which is a total of 523g. But I digress...