Masking tape: speaker setup trick...

I had been working on setting up my speakers and it was getting difficult to figure out how much I had moved them, where exactly the golden points where, and this, that, and the other. So, I went down to Home Depot and bought a couple of rolls of masking tape for about a $1.50 each. I went home and taped down a grid on my listening room, marking out all the golden points, the center, and everything else. I finally found the best place to place my speakers for my setup and when I was done, the masking tape pulled off easily.