At the bottom of this page
http://quiltlessons.blogspot.com/ is a method I have used with success.
It's basically dividing the batting into sections, and qulting each section separately. that way, it cuts down on the batting you have to smoosh through your machine.
I have quilted a queen size, doing the borders as their own section.
Though I don't remember where I got the information, I remember seeing a site that didn't necessarily divided the quilt into even thirds. It more followed the design of the quilt and let that dictate the sections. For instance, it was more of a diagonal section.
I do use S Schamberg's (sorry, I'm sure spelling is wrong) glue method rather than basting