Intarsia in the round

I ran across a wonderful tutorial at Moth Heaven for doing intarsia in the round. Please check it out, I am using it on my Jollyfish Hat. I am having to go back and re-read the steps, it's not all that intuitive to me, but how wonderful to not have to carry and twist 2 threads behind the entire hat. She does explain that it is a bit "fiddly", but sometimes keeping track of the tension of floats doesn't work well either. And duplicate stitch is ok, but not really a challenge for me.