In my experiences and one that has not involved spending $0000's on a Sub Support for a TT, there are methods that will tidy the TT's presentation up.
After introducing other TT set Ups to methods selected by myself, there in not a ubiquitous method that works equally in the environments where loaned support methods have been demonstrated and offered up for extended loan periods.
The method adopted that has the most success in relation to my experiences and the one that is today superseding all others used in the past, is to used a Sub Plinth produced from a Phenolic Resin Impregnated Densified Wood, produced with a Cross Grain Structure, with a Thickness of 25mm (1").
The Densified Wood Board depending on weight to be mounted as a TT> DW Boards combined weight has been to use a Pneumatic Footer under/over DW Board, such as a AT 616 footer. Other Brands are available and will do similar as a footer, I have heard them in comparison and know there are valuable similarities.
If TT weight is not too much of a concern, the Solid Tech 'Feet of Silence' with a O Ring suspension has been the most valuable footer used for tidying the overall presentation up.
As a side, I firmly stand by the notion proposed by myself on the odd occasion, that the Aluminium Base used for mounting the TT's Parts and then Suspended on the Sota, will be substantially upgraded if substituted for a Phenolic Resin Impregnated Wood Board similar to the constriction method already referred to.