I spray baste on my bed. Fortunately it is a king but any bed will do. I cover the bed with a big flannel sheet, this protects from over spray AND holds everything in place. Put batting down, arrange backing, fold half of backing back, spray batting, smooth backing down, fold back other half, spray and smooth again. Flip that over, arrange quilt top on batting and repeat the fold back, spraying and smoothing process. Viola! You have a very smooth result that you will love. Just spray sparingly until you know how much it will take to hold nicely and it will not take as much as you might think. I have basted large king sized quilts alone in under an hour, and yes, sometimes I have to lift and shift the whole thing and layer in sections but the results are fantastic. I like 505, Dritz, June Taylor (new Improved Formula), but do NOT like Sullivan's.