Gamerchik, Your side panel states:
Location: Slytherin House
Yet you knit a Gryffindor scarf? Are you currently pollyjuiced? :??
I also have found that stockinette stitch folds easily and I've never needed to make any special allowance. I have considered using a purl (anti-rib) as suzeeq suggested but always seem to opt for the ease of just straight st st.
Now, just what is that Slytherin Gamerchik playing at by giving you a simple and correct answer? Well, I guess not all Slytherin's are dark Wizards or witches. :shrug:
LaFlaca1226, I also have a Fair Isle scarf in progress. (I really should update my signature OTNs) Working the scarf as a tube makes for a very thick scarf (I'm using worsted weight acrylic yarn). You might want to consider that when choosing your yarn weight and when planing the width of your scarf.
For the more seasoned experts (Sue or Jan) does using a larger needle help thin out a thick tube knit when working Fair Isle?
LaFlaca1226, for the small diameter scarf tube, you might consider using either the two circular needle method or a single longer circular and magic loop. I shudder when I consider Fair Isle on DPNs. Two color and multiple unused needle point sound like too many opportunities to get things tangled up.