Hi Rob,
Starting from the tree end, the huggers you've shown will be great. They are shown with a dutch clip, but I dont think they come from UKHammock with dutch clips as standard. You can either use a carabiner in place of the dutch clip or thread the hugger through the sewn in loop on one end to tighten around the trunk. Next, you'll need to attach the whoopie sling to the hugger, and the best method is probably a marlin spike hitch and toggle. This is really easy to tie and the toggle can be home-made from almost anything. The whoopie then runs down to the gathered end of your hammock, but you will need a drip ring of sorts to stop rain running down the sling and into your hammock. Now depending on what hammock you've got, you'll either have a sewn-in channel at the end to thread a strap through (like the DD hammocks) or a permanently whipped end (like the Warbonnet hammocks). For both types I'd recommend a 12" (approx) closed loop of amsteel or similar, to either thread through the channel (DD type) and pass it through itself to tie of with a larks head, or tie a larks head around the whipped end on the Warbonnet type. Either way, you will have a short loop fixed to the end of the hammock which can be connected to the whoopie with a carabiner as a drip ring. You can use desender rings here instead of carabiners if you can source some. UKHammock might have them. Thats your suspension set up and ready to got.
The adjustment on the whoopie is simple once you've seen it in action. The braided rope is threaded through itself, so when you apply a load the outer braid constricts on the inner braid and locks it tight. The greater the load the tighter it grips. To slacken just remove the load and pull the inner braid through from the opposite end and it slides through easily. Its got to be the easiest and lightest suspension system available; you just need to trust the slings because they look VERY thin
Personally, I'd go for the marlin spike method, so you'll need a couple of toggles, and unless your looking to save weight, I'd also get another pair of carabiners, so you've got a set to attach the huggers to the trees and a set as drip rings to attach the whoopies to the closed loops at the hammock end. Some people use soft shackles instead of carabiners to save weight, but I havent used them myself.
Hope this helps.
Mark
edit: I took so long typing that post that resnikov, Shewie and Lab72 got in their before me.
p.s. Shugs videos are great.
