For Christmas, I received a Lost River 2/3rds underquilt. It's nice and warm on my back, but stops at my knees.
I tried a cut-down pad, but I flop around too much and have to keep re-positioning it, making for a long night.
I have a bunch of reflectix, and was thinking of using velcro to attach it to one side. I'd like to know what YOU use to keep your feet warm with a partial underquilt...