I'm new to hammock sleeping and want to make a hammock for myself (66" and 140#). I've used an old Byer with multiple strings that go to the hang point instead of fabric and have found it a little narrow. Before I start plunking down money for materials and all I want to figure my dimensions. I have a homemade 12' x 10' silnylon (1.1 oz) tarp I made and would like to use it as a dimensions tester.
I'd fold the material over to a make a 12' x 5' piece and then tie the end together and put on my suspension (whoopie strings) and fold the excess back over and again tie. This way I would start with a 11' x 5' hammock. If it isn't wide enough I just unfold and make it wider. I can also shorten it.
Since some people make hammocks of 1.1 oz nylon I can't see why this would hurt my tarp.