I have the Brand Solid Tech - Feet of Silence' and Audio Technica's - AT-616 Footers in use under my TT, and will when I have a functioning HiFi room back in place, will be trialling Panzerholz and Permali Boards in place of a Highly Compressed PUR Foam (750Kg per cubic metre) that I have been using for a few years now.
As said previously, I am happy to loan items out and the Local Group I belong to, and am meeting with today are now using the Brand Isoacoustic Footers under their TT's, CDP , CDT > DAC's and Speakers.
Very recently a New to the Group Valve Amp, during the demonstration had a noticeable looseness to the lowest Bass Notes, Isoacoustic Feet were used under the amp' and the Bass become taught to a very noticeable degree.
Drawing on experience the best way to assess an impact a material or device can have is to live with it for a period and then go in reverse to return the Set Up to the earlier used method. It will be instantaneous where the difference are to be found and at what point the change occurred.
You have nice materials acquired to be sure any further investigation into producing a support structure is chosen to be undertaken, the trials are to be supported with desirable to own footer ancillaries.
The good news is that the response to an inquiry from almost all of the forum members, is not in any way a mimic of the Caricature of the Eighties/Nineties HiFi Retail attitudes as portrayed in the Link.
Enjoy the moment of satire.