I'm new to all this and am looking for a tarp to pitch over my hammock. I'm considering taking my hammock on my AT thru-hike (starting in June) so the lighter the better. I use an ENO double-nest and was wondering what size I should be looking at. I found a Granite Gear 8x10 and a Kelty 9x9 both fairly priced, but both at 22 oz. too small? too heavy? any feedback is appreciated.