I am curious about the ENO hammock system, if you get one of the ENO original or doublenest hammock, does it has a cover for keeping bugs off or do you have to buy the bug screen separate? I saw a guy on the AT this past weekend with one set up with a tarp above it. I thought it was neatest thing, but I didn't notice any flap to cover up the person sleeping in it. With proper tarp, does anyone have any problem getting wet during bad weather? I'd like to rent one for an overnight trip just to see what it's like.