What kind of yarn are you using (is it slippery?)? How are you weaving the ends? How long is your weave? Certain yarns may necessitate the ends being stitched with a bit of thread. I don't use slippery yarns but do use a lot of recycled yarns that have unplied threads. With that, or acrylics (when needed), I use a dab of FrayCheck.
ETA: neglected to mention I always use some form of dupe st to weave. Nearly impossible for ends to find their way out with that method.