This weather cover has a zipper on the same side and same place as the Blackbird. I zip it up to the pullouts on both head and foot ends and then velcro shut where the zipper does not close. It also has a separate slot for the pullouts as an option, but it is easier to get in and out of if the zipper works like the Blackbird zipper does. The non zipper side just has a slot which closes using Omni velcro.
I had to add 24 inches to the 72 inches used on my weather cover for a Claytor or Speer style. This assures that there is not compredssion of the JRB quilt.
It now weighs 14 ounces. It used to weigh 7 before the addition of fabric and zipper. I can live with that. It is cinched up on both ends by a draw cord and cordstop.
As those of you who use a weather cover all around the hammock know, it immediately adds warmth and stops the breezes. Mule