TT mats

@bdp24 I would just place a record on top, trace it, then use sharp scissors.

The SD series from Percy are all adhesive backed. The strength of that adhesive is practically permanent. If you decide to try it, I recommend doing so without removing the protective film. 

Thanks invictus005, but the Isodamp is not for my tables, all which have platters made either entirely of Delrin (Townshend Audio Rock), or aluminum with a top layer of Delrin (VPI). I have looked at the Isodamp for constrained layer applications, but didn't know it was available in black, as the SD-125 is. A lot of it is available in blue only.

My VPI Superscoutmaster has the aluminum platter and I use Herbie's Audio Labs Grungebuster Mat. Protects the records and sweetens the sound a bit. To clean, I remove it from platter and run it under hot water. I love mine. Looks good as well...

Noromance, What you experience as "energy suck" is what some others might experience as proper dissipation of spurious energy that would otherwise generate resonant frequencies audible in playback. I am not saying that you are "wrong" and the others (including me) are "right". I am only saying that this is one of the eternal debates in audio. How much damping is too much? So far, for me, the BA Mat2 is the best I have heard for conveying a very neutral sound. I use the term "neutral" to indicate that I do hear a reduction in colorations that might be generated at the cartridge/LP interface. (Perhaps this is what you call "energy suck"; I cannot deny that those juicy colorations are addictive.) Paradoxically, another favorite mat, for me, is the SAEC SS300, which is metal, and so one would think that it does not interface with the LP as energy as the Mat2 might do, because the latter is made of graphite or something similar to vinyl in propagation of energy.

I have really disliked rubber or rubber-y mats that I have tried.

Waiting to hear from fans of the Resomat, for a completely different take.

Another mat to try is the Funk Firm's Achromat for $100. Its secret material is foamed PVC. Identical stuff that signs are made out of. You can get the 3mm thick sheets at any sign store, or even Lowe's/Home Depot in any color and cut a circle out. They run $10-$20.