Pad Sleeve for HH UL ASym

I have looked but could not find any info about putting a pad sleeve on a HH UL ASym or any other HH hammock. Has anyone tried? If yes, where can I find the info.
I'm thinking about having a single full length zipper added along the side at the bugnet and hammock fabric line and also sewing the bottom entrance shut as the same time. Seems like a pad sleeve would be a good mod.

my wife put a sleeve on a speer type one time,,, i ended up freezing that winter night because the material tore and the pad fell out. I know there is a scientific way of sewing one on.. something about bias??:confused: