Long time lurker but this is my first post. Got an idea for a minimalist camping bag in which a hammock can be inserted. The result, ideally, is a mummy bag that can be converted with just the addition of two zippers into an OQ/UQ combo.
Starting with a center-zip bag such as the Wiggy's Military bag (he's having a sale right now, 30% off and free shipping BTW) add two zippers: one at the shoulders/head and one near the foot box. The should run horizontal to the lay of the bag and encompass a 90% arc (10 to 15 inches of unzippered expanse around the center zip). Its hard to explain so I made a pic (see pic if i can get it attached).
The problem this tries to solve is the fact that many bring UQ and OQ or an UQ and bag to solve the issue of insulation compression on the back side. Additionally, a full size UQ is somewhat larger than a mummy bag and not as useful as the proposed.
note that this is roughly 8-9 feet long but it does velcro together much like the proposed design.
The proposed puts the portion of insulation most in danger of being compressed under the hammock thus keeping it from being compressed. The fact that the bag isn't directly attached to the hammock prevents the stretch of the hammock from putting any compressive forces on the insulation as well. A well sized cut in the bag should kinda squish the hammock a bit without squishing the insulation: making a wind resistant seal between the hammock and UQ portion of the system. The center zip should make it more draft proof than most UQ designs but be just as easy to get in and out of as an UQ setup.
(And if I go with this, it will be with a wiggy's: I want a durable synthetic insulated bag since once sleeping in a wet down bag.)
Does anyone see any potential issues with this system? Has anyone tried this? Is the area of hammock near the nape and feet (crack in the blanket) too cold? Lemme hear the experts talk!
PS: I am not worried about sleeping straight instead of angled: feels about the same to me.