Hammock underquilts query Make do with

So I am finally going to have a go at a simple hammock.
From my readings and conversations with hangers I know about the cold weather problems and the need to below hammock insulations.As almost always I am on a pretty tight budget and need to utilise items I already have.
Part of my stash of gear are my summer sleeping bags, a S2S TR1in the XL size and TR2 in a Large; and I'm wondering if anybody here who hangs has used either as an underquilt and if so did either of them need to be modified in any way?
Otherwise would; in the forums opinion; would either of them work well enough without modifications except for a loop to hold some sort of attachment device to hold them in place?
Assuming a reasonable clearance between the hammock fabric and the S2S would I gain much dead air insulation to allow use below the EN ratings?
As they have compatible zippers I'm guessing that if it was really cold I could use both in conjunction but I think if it was that cold I'd be more comfortable in a great big tent with a wood stove and a cot
From my readings and conversations with hangers I know about the cold weather problems and the need to below hammock insulations.As almost always I am on a pretty tight budget and need to utilise items I already have.
Part of my stash of gear are my summer sleeping bags, a S2S TR1in the XL size and TR2 in a Large; and I'm wondering if anybody here who hangs has used either as an underquilt and if so did either of them need to be modified in any way?
Otherwise would; in the forums opinion; would either of them work well enough without modifications except for a loop to hold some sort of attachment device to hold them in place?
Assuming a reasonable clearance between the hammock fabric and the S2S would I gain much dead air insulation to allow use below the EN ratings?
As they have compatible zippers I'm guessing that if it was really cold I could use both in conjunction but I think if it was that cold I'd be more comfortable in a great big tent with a wood stove and a cot