I baste mine on folding resin tables bought at Lowes. I have 3 tables DH bought for my Christmas village display, so the rest of the year they are used for pin basting quilts. I lay the backing out smooth and taught and clamp with picnic tablecloth clamps, spread the batting out and smooth it, then the top. I don't clamp every layer; with cotton batting the layers stay together nicely. I pin what I can reach on the table, remove the clamps and position, smooth, and pin the next section. I've tried several ways, but this works the best for me.