I just stumbled across this (or, a review video stumbled across me on YouTube): https://www.grandtrunk.com/products/...0-down-hammock

Seems like an interesting idea, especially if you're the claustrophobic type that maybe finds top quilts restrictive. Cost-wise, it's less than what you'd spend on a hammock, TQ & UQ (at 20 degree ratings), although it's just a hair over 10' long and weighs over 4 pounds.