I think I'd like to store my Duplex in a slender longer stuff sack in one of the side pockets of my Circuit. Does anyone have a recommendation on how they've done this? I tried it once and just stuffed it in an old Tarptent longer slender stuff sack. I wonder if rolling it wouldn't be better... it fits under the straps of the pack fine, but getting it in the pocket on the pack is the restraining part. Ideas?