In the basic techniques, it says "Overlap the old and new yarn, and knit three stitches with both. Leave 1/4"-1/2" tail from each, dangling on inside of work, so the ends don't pop out in right side of work. Advantage: easy! Disadvantage: those three stitches may look bulkier. Knitting them tightly will help reduce bulk."
I'm knitting a blanket right now on size 17 needs and i'm double stranding it. I know the blanket will get tossed around and will be heavily used. Will this technique of joining the yarn hold up to abuse? I'm scared that the yarn will come undone!