When I have to attach a new skein in the middle of a job, I use a square knot, so both ends lie flat (one before the knot -- the other one after the knot--and the knot is flat, too). I leave about a 1-2" tail on each piece, then knit the first tail in as I go, working across the knot, then working the 2nd tail in after the knot. (I hope this makes sense.) The result is NO TAILS TO WORK IN LATER, which is one of the few things I don't like about knitting.
