I have a BB 1.7 double.
I tried an blow up air pad (the type with the air chambers that run the full length of the pad) and for me I did not like it as it seem to develop pinch points that did not insulate. I even tried a synthetic sleeping bag but it slid around too much
I have used a wallyworld blue ccf pad on many hangs and it has worked very nicely for me. However I did not like the bulk. If I am car camping, no big deal. As I have been able to afford it I have been investing in UQ's. So far I only have a 1S and 3 Season UQs and have only been able to test the the 3S UQ (rated to 30 degrees) I have down to 50 degrees. As claimed, the UQ's are more comfortable than pads.
Figured out how to keep the ends closed so cold air does not in. Still playing around in learning how to keep the UQ from slipping to one side as I am a restless sleeper and usually find the UQ slips down and to one side just far enough that I start to feel cold on the exposed side. I reach out and pull the UQ back and I am warm again.
Still my worst night in hammock was far better than my best night in a tent.