Does anyone have a hard time keeping the NeoAir pad under your sleeping bag? I can stay on a BA Air Core all night, but last summer I tried the NeoAire to save weight and it kept squirting out from underneath me. I had to readjust my sleeping set-up three to four times a night. I eventually took on the extra weight and went back to the BA.
Never had this issue despite 50+ nights...typically we use two NeoAirs coupled together into a double mattress (with the velcro straps made for this purpose, by ExPed I believe?) and then zip our Western Mountaineering bags together, and this whole set up is inside a nest so perhaps this helps keep the pads underneath us? Even so, haven't felt much slipping at all, so maybe it's something to do with your sleeping bag outer material?