Mac, thanks for the fast reply. I guess some experimentation will be under way. I lack the underquilt as I'd need 2 and right now $600 is not in the budget for the Incubator's that I want. I'm looking at this as much as a wind/draft cutter along with the 3/8" rubber mat to go with a few 20 degree down bags. If it gets us comfortably into the mid-20's I'll be thrilled!
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