https://www.moosejaw.com/moosejaw/sh...iABEgJNrvD_BwE
Forgive the ridiculous link...
I go both ways. Air and ground so before you chuck ten years of experience...
Try this Exped Pad. Get the medium wide or long wide- not the regular.
REI no longer has them but Moosejaw (and others) do and they are matching the anniversary sale coupon.
This pad has some actual insulation (a private label Primaloft) so it does better than the Neo-Air when used in a hammock.
The vertical baffles also work better in a hammock than the horizontal baffles of the Neo-Air series.
Point being: Buy this pad, try it at home. You may not like going back to ground as much as you think.
If you do like it.. then you got a pad and you can go shelter shopping.
If you don't like it... then put this pad into your gathered end hammock and you might be surprised. It could solve your hammock problem. I prefer bridge hammocks, but with a good pad in the gathered ends I find them workable. A double layer is ideal... so if this feels good maybe a hammock upgrade is the better move?
I find hammocks handy for getting up outta the muck or ducking into a random spot ground dwellers cannot.
I find underquilts annoying when I'm on the AT... it's pouring buckets... and there is a perfectly good shelter sitting there to duck into or a hostel stay that might require a pad.
Most importantly... when I walk over a bald, reach some stunning mountain view, or just want to sleep in an open meadow and stare at the stars...
If you use a sleeping pad with a hammock you can do whatever you want.
A hunk of polycro or tyvek for a ground cloth does the job to lay the pad on without breaking the scale.