I know there are purists out there that might take away my posting rights for admitting, this, but I have been known to knot with impunity. As long as it doesn't stick out the front or make a lump, who cares? When I knit a fair isle pattern, sometimes toward the end of the evening (who am I kidding--early, early morning) I tie a knot when I change colors.
The yarn I'm using is so fine that there is no way it'll make a difference. So there. Do what you will to me. :rollseyes: