Assuming you are a side sleeper:
Sleeping on a 7mm (1/4") CCF sleeping pad may not be the top of the confort, but I've found this simple trick to sleep over it with confort similar to sleeping on a 2-3cm (1") pad:
While side-sleeping, I KEEP AN INFLATABLE PILLOW UNDER MY CHEST (longitudinally): it helps the spine to stay straight and uniformly discharges an important part of body weight over the pillow, so the weight graving over my hip and my shoulder is greatly reduced!
An inflatable pillow has little weight (30-60 gr – 1-2 Oz) and can greatly increase sleeping confort, only be sure to find the right inflating level for you: it is often a lot lower than you would think at first glance (for me, it is 1/3 of max capacity).
You obviously need some other thing for using as a pillow to support the head
I'd like someone else to try it and give me her impression.


