This may be a really unfeasible idea, but I want to bounce it off you DIYers - would it be possible to make a double version of a bridge hammock? Since the hammock does not sag in the same direction other hammocks do, it would seem that by adding a strap down the center from head to foot that attached to the spreader bar one could create two somewhat separate sleeping platforms using the same spreader bars - and share under-insulation, bug netting, a quilt and a tarp for weight savings - and share heat for comfort.