Roll it up and sew!

We rolled up both ends of the quilt backing so only the area to be stitched was visible. The less bulk to manage, the better.

Then starting at the bottom (the end we were NOT starting the stitching at) we rolled the whole thing up. Then we sewed our seam, unrolling as we went.
This is Quilting As You Go because the quilting is both the seams holding the strip sets in place, and the seams we sew the poly pellets into the strip sets with, as opposed to adding quilting after the quilt is done... which we couldn't do anyhow over the poly pellets without breaking needles/making massive messes...