It's actually been quite still the past couple of days so I thought I'd try it out. Last night was forecast to be anywhere from -5C to -10C

I got into the hammock just before 10pm and it wasn't long before the cat decided to play with the end of the tree straps - I had visions of him tugging and releasing one end of the hammock


Lying there this AM I wondered why the edge of the tarp was so close to my head? After all it's way bigger than other tarps I've used. Then I noticed that the structural ridge line of the hammock wasn't lined up with that of the tarp. A bit of thought and I realised that it was how I was fitting the tree straps around the tree. This is at the left end of the tarp in the image. The line holding the tarp goes through a ring at the end of the ridge, round the tree then back to the ring forming a 'V' shape when looked at from above which self-centres on whatever sized tree you use. The hammock strap on the other hand goes round the tree and is then threaded through itself (actually through a soft shackle) so when it's loaded it tends to align with the load, i.e. to the side of the tree. I'm right handed so tend to feed the strap from the right. I also prefer to sleep "head left, feet right" meaning my left shoulder is at the edge of the hammock. This combination of the strap and my head being to the same side meant that I ended up being much closer to that corner of the tarp. I swapped the tree strap around and hopped back into the hammock - all was lined up and I felt much more centred under the tarp.
The shot below shows the foot end which has the strap going through the doors "centred" whereas that at the head end was pushing against the right side, in fact pushing the gap open quite a bit.

Just goes to show: always test; always be prepared to learn and adjust.