I have a few suggestions.
1. Go to the office store and get 2" binder clips. I use the binder clips on my cutting table and only clip the back. The batting and top lay on there. If you start in the center and work your way out, there should be no problem.
2. Use temporary adhesive to baste. There are a few brands on the market, and this works well for small quilts you plan on machine quilting. I doubt this would work well for hand quilting, as the adhesive is temporary.
3. Hang quilt sandwich on clothes line to hand baste. This is a method used by many in the past, and still seems like a great idea.
4. Have your quilt long arm basted. Check with a long arm quilter in your area. For a rather small sum, they will often baste your quilt for you.
Good luck and please get off the floor! :lol: