I layer mine on our king-size bed and spray baste. To protect the area from over spray I cover the bed and head board with a big flannel sheet. The sheet also helps hold the backing and/or quilt top in place. With a little practice one can completely layer a king sized quilt in 20-30 minutes and no crawling on floor. Any spray baste will do. I buy the June Taylor from Joann's and use the coupons.