Looks like the Jacks have indeed added zippers to their BMBH.
Here's the detail from their site:
The hammock comes complete with an attached bug net made of no-see-um netting that is zippered on three sides with a double pull zipper. It can be unzipped and tied back if desired when there is no bug threat.
Very similar to our two mods for the BMBH.
2QZQ Hammock Specialties
Hennessy Hammock zipper modifications
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