Last night, in a vain attempt to cut weight from my pack, I modded my Asym tarp to include six 1" webbing loops around the hem. The positions are (1,2) half way between the corners of the shortest side and (3-6) on each adjacent side the same distance from the corners as tabs 1 and 2. That means counting the corners, I now have 10 securing points to play with.
The advantages are:
- I am able to use the tarp as a lean-to
- I can add extra lines where necessary to stabilise the upwind side of the tarp in heavy wind
- I have more flexability to shape the tarp to suit the direction of rainfall
- If I string the hammock between two trees close together, I can tighten the tarp even if I can't stretch it all the way along the suspension lines
- I can lace the tarp around the hammock to wrap it around in strong wind
- I can wrap it around me to act as a makeshift poncho
This last item doesn't work well at all. Just as a poncho makes a lousy tarp, a tarp makes a lousy poncho. But here the seasons and weather are fairly predictable and I just need to avoid getting caught out by a surprise shower. I thought about this for a while, but getting a little wet while walking is preferable to getting soaked while sleeping.
I also got round to adding 4mm thick shock cord loops to the tarp lines. This has two main advantages. The first, as the others have said is to self tension the tarp as it gets wet, but the second is more important to me. I find the standard tarp lines to be of a boor standard, being hard to untie knits in, being hard to shank, prone to damage and hard to stow when snake skinning. The lines are now affixed to the shock cord and the shock cord loop is easily removed and put back.
I have cut my ridgeline and added a three hole cinch for adjustment.
I also plan to mod my Velcro closure to add a lacing backup. and add a lace or press stud closure on my ridgeline bag.
I have also added a line to my pack from the ridgeline.