The fastest, easiest, most stable method to use. If you are using your home machine, you do not need to add tons of extra inches because it does not move around. Very stable!! Make sure you use a light hand, drizzle instead of pour and smooth out any blobs you may have.

You could tape it to a table and let it hang over the side (let gravity be your friend) while you baste the first section, then just remove the tape and slide the basted end over the side and work on the other end.

I use a sheet of plywood on my ironing board to extend my space. I don't have any trouble with my quilt sandwich shifting. I use it every time.

I use Candy Glendening's Column quilting which allows me to quilt any size quilt easily as the work is always to the left of the needle. I did alter the backing a bit.. I make it in once piece and have it in a roll to the right of the needle. It's not all that bulky and works well. I also allow a good 1/2" on the edge where the next column will be added, as I like a bit more room. I've used sashing and no sashing.. I've done quilts as big as 120" with no problem. Not to mention the money I have saved on Long Arm fees.
Again, 505 Temp Spray Baste is my lifesaver.

https://www.youtube.com/watch?v=L_b9WjeP0mU

If the quilt is small enough to have in one piece, I use Sharon Schambers method for basting, except I now use 505 Temporary Spray Baste, instead of the herringbone stitch. It's terrific. I use pre-painted baseboards (1" x 2' x 6), which I got at home depot. I clip the quilt edge to a table but it could be taped to a floor as you spray. Fast, easy and the quilt holds together forever, or until I get around to quilting. The spray basting eliminates the pinning (which to me is a hassle) and extra weight of a billion pins, and holds together as I quilt.

https://www.youtube.com/watch?v=bhwNylePFAA

Bernamom.........this is an excellent way to baste a large quilt. Works and no need to spread entire quilt out flat.