Hi! I really want an Eno hammock, I jsut don't know what size to get. I am 5'5" about 125 lbs. I might want to share with my friends (also small-ish sized) sometimes (not too often), which makes me want the Double. Also many reviewers say the extra room on the Double is nice. But in some pictures it looks like you sink so low in the Double you are completely enveloped. Then you couldn't see and would feel like you can't breathe, plus the extra fabric might be annoying. Is the Single too small? Would I be comfortable in the Double if it was just me? Is one preferable to the other for mainly single use but possible double use? (I probably won't ever use this to go camping, but in my backyard, parks, etc. so I don't need extra room for sleeping bags or other overnight supplies.) Thanks!