When I did my blanket, I just used the Noro as it is so I didn't have ends.
You could felt together the ends of different skeins as you change yarn, or make a point to weave after each tier. I'd just put the end on a tapestry needle and weave it back and forth through the picked-up stitches on the back.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry