I'm looking at purchasing an underquilt as I think it's going to take a lot longer to make one at the moment!
So, while searching for a good price in the UK (Not many suppliers!), I found this:
Now, to the topic, his baffles are perpendicular to the hammock, which I believe will allow the down to fall to the lowest point, leaving the edges unfilled. Surely the baffles should run parallel to the hammock to stop this?