I found this link today to a thread , from Graham / aka g4ghb , on the bushcraftuk forum showing - with still images - yet another method for hanging a hammock using webbing and rings.
And the popular in the UK Evenk knot. I like it myself too but I use it for my tarp ridgeline on one end.
One thing he does which is an interesting method to get a reproducible amount of sag on each hang is to use a temporary ridge line , he calls it a guide line.
If I understood his use of the guide line , it is only used to get the sag the same each time the hammock is suspended, then it is removed before laying in the hammock. One could of course attach a permanent ridge line once you find a length of line which gives you the amount of sag you like but then you have to use strong line and its always there whether you want it there or not.
His guide line has two small clips , one at each end of the line. The length of which can be tinkered with till you find the sag you like. The ridge line is attached while adjusting the suspension lines at either end of the hammock and then the ridge line is removed. Thus no need to use strong heavy clips which would be required if leaving the line attached since high tension can be present if suspended to tightly. Thus saving a little weight.
But perhaps this is a known technique to you more veteran hammock hangers.
Anyway, not intending to hijack the video thread - just offering a link to yet another way of doing things. Also I posted links to the videos in the bushcraftuk forum thread. Thus spreading the knowledge.