I have been using Crafty Bear's birthing technique for small projects such as tablerunners and table toppers (the method is to put the right sides of the backing and the pieced top together with the batting on either side, sewing all around it with an opening to turn the piece right side out like a pillowcase). It works really well and doesn't seem to present a problem with FMQ (I was worried that I might end up with the fabric billowing).
I was wondering if anyone has tried this with a larger quilt? I just did it with a 48 x 60 baby quilt and it worked very well but not sure how it would work with a larger piece. I am getting ready to start another D9P that will be 72 x 72.