I'm trying to plan bottom insulation for year round use. For reference, I'm 6', c. 160 lbs, cold foot sleeper, experienced outdoors but new to hammock camping. I have ordered a full length UQ from Wilderness Logics (78", +1 oz for 13 oz total 900 fp down) that they rate to 20*. I don't know yet how I sleep in a hammock compared to on the ground, but I figure that will get me through spring and fall in Kentucky.
I'm planning to make a summer UQ from half of a Costco down throw (so, like 60x35 for an approximate rating of about 50*), do UQ temp ratings stack at about the same rate as overquilt or sleeping bag ratings do? Aka by my math, a 20* quilt and a c. 50* quilt should be about right for 0*, as long as I get something extra down by my feet--although my TQ is closed footbox so that'll help some, but still want a footpad I guess. Got a ton of various closed cell foams lying around that I can experiment with for that.
Does this all sound right? I'd rather go modular to cover four seasons camping instead of dropping the money on a 0* quilt that I'd get much less use out of.
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