I did this method on a quilt recently that was 104x110. I actually wasn't able to do exactly like she did though. I did the backing and the topping separately at first. Taped material down say every 10" across the board and then had to have dh help me in the rolling up process. Did the top the same way and then was able to sandwich together which worked out great!
Since this was so big I even spray basted, before hand basting. LOL Didn't want that puppy shifting anywhere! I didn't roll the batting though, I just sort of flopped it forward, sprayed the backing, brought it forward and smoothed it out and then spray basted and then unrolled the top and then hand basted.
Then machine quilted on my DSM. Really worked out wonderfully and no puckers! :thumbup: