Cd mats, weights et. al.

Interested in hearing any experience you have had with cd mats, weights, etc.

I have had some players with clamps/weights, but recently heard of a tweek of placing another cd label side down on top of the cd to be played. I was very pleased with the additional information and sence of pace and ease that was created from the disk being played.

It would seem that the extra weight would ad inertia and stability that may help the laser read with less error...but I really do not know, but would think there is something better out there than placing another cd on top of the one you are playing?

Thanks