I read this in Making Trousers for Men and Women some time ago:
"Whenever I mention glue in a sewing workshop or class, everybody laughs, as if I’m cheating or something. Apparently, the word hasn’t yet gotten out: Adhesives are a sewer’s best friend! They’re the tiny fingers you don’t have and the invisible pins that don’t ever need to come out. Admittedly, I’m quite restrained here. I use only a water-soluble glue stick and, recently, a neat ultra-fine fusible basting tape —so far, no spray adhesives or glue guns—but, really, you have to try these things!
Three quick glue-stick tips: Don’t use more than you need, which is usually very little...Don’t use the glue if it’s dried out and shrunken in the tube. (You can often resuscitate a shriveled glue stick by spraying some water into the tube cover, snapping it on tight, and letting it sit overnight—but this stuff is cheap, so get a new tube now and again.)"
On the strength of that recommendation, I bought one, and haven't used it until I was thinking about how to baste the hems for more pussyhats. I thought, why not? If I waste one hat, I'll have at least learned something.
I'm happy to report that the glue stick worked really well on fleece! I had no trouble with my hems wandering around on me.