After recently purchasing a couple of hammocks, I went back to look at purchasing some straps to assist with fastening to a tree. Was shocked that the strapping materials in a kit cost way more than the 2 hammocks I bought put together. So, I set in to make my own!
1st you need to find your local outdoors store that sells climbing ropes and strapping material. As you see in my materials list, I purchased some hollow strapping 1" width. It will be your judgement on the length you wish to purchase, but as I bought, 2ft is sufficient for each end, and enough to go around the back side of each tree to protect its bark and/or trunk from damage.
Hollow strapping material (2ft per end = 4ft Total)
Paracord (however much you need) I am using approximately 11-12ft as explained further in instructions.
Carabiner x 2 (durable to withstand weight limit; NOT the cheap $ store kind)
1. Cut your strapping as mentioned above, into approx. 2ft pieces. If you pinch strap together you can see how this material is hollow. Once separated, lightly singe with lighter to prevent further fraying.
2. Paracord: First double the cord in half to aid in strengthening. After doubling, cut to desired length. I used a piece about 11 to 12ft in length.
3. Once doubled, slide paracord thru strap until you can grab on other end of strap. This can be a little tricky to slide thru, but if you maintain pinching strap in half it will help.
4. Now that you have the strap slid thru, take the loose end and tie together in a quick knot.
5. Next step will be to go down end of cord and tie several knots, which will help when securing hammock to strap. Depending on the distance between your two trees, you can adjust tension by moving to the next knotted area as seen in photo with carbiner.
That seems to be about it. Will try to show photos of strap in use, but currently hammock is hanging around down in basement until further use!
Also made a carry bag to keep straps in for carrying in your backpack, which I can show in separate Instructable.