Hi just recently finished a four season hammock tarp sewing project-
Thought I would share some of the pics.
Using DIY Gear Tarp project dimensions
I bought the material from DIYGear Supply in the US even with postage it worked out quite cost effective.
The only thing that needed fine tuning was the sealing of the ridge seam. One tube of Seam Grib did the job
and I have tested with a hose pipe no probs. The only downside is it is not lightwieght.
Only used it one weekend this Oct and was toasty