I pin my quilts about every 3-4" on my glass topped dining table, I clamp the backing,batting and then top, putting clamps on each layer and pin like crazy, table isn't very large when I'm done with all on top, I move it to another section and keep on going until it is all pinned. I am going to buy bed risers to put under table legs to raise it, so my back and hips don't hurt as much. I'll remove them when done. I make mostly full - queen size quilts. This works for me.