I'm 5'10" and pretty much an averaged size guy. I have an old ponch liner that I have left over from my time in the Army. It's 5x6 and I've used it as a tarp tent when I was in the Army. Is this good enough for a shelter with a hammock if I am caught in the rain?If not, what tarp should I be looking for? I spent a night in the Ozarks spleeping among the rocks and have sworn off sleeping on the ground ever again. I've never had a good nights sleep in the field and hopefully the hammock will change that. I'm looking into getting a Grand Trunk Nano-7. Has anyone tried this hammock? It's said to be the lightest hammock on the market.