What isolation feet under your amp with great result?

@rixthetrick 
What is on top of the amps now are two (on each amp) of these heavy little brass suckers that Dan finished in black with Isodamp elastomer material on the bottom:
https://edensoundaudio.com/shop/fatboy-disc/

I like the Isoacoustics carpet disc suggestion.  The smaller ones for the Gaia III are 1-11/16 inches in diameter so would fit a medium sized spring but they are 1.75 inches tall, which may be too tall for my situation.  I am thinking about how I could leave the Sound Anchor stands spiked to the floor and then put the springs beneath the speakers but that would negate the benefit of the additional 65-pound weight provided by the SA stands.  More consideration is needed.  First I will do some listening and decide whether I like springs under my amps before I modify my speaker set up.

@georgehifi  - sorbothane may be fantastic for the AMG or TMD toppers I have been suggesting.

Have you personally tried it against springs? It's the broad frequency range of isolation that I believe makes springs still the most used engineering isolation system in the world.

@mitch2  outriggers which come out and then up from the base and then horizontal could help lower the speakers, the center of gravity and create a more large and stable base under your speakers?

Can Dan do a 8.5lb version of the fatboy discs?

Seems we're already on the same page :-)

I'm new to this whole concept of vibration isolating the electronics, though it certainly makes sense when it comes to tube amplifiers, and clearly how a speaker sits on the floor will impact its sound.  And there seem to be quite a range of opinions on what works best and many of the options seem very expensive.  So here is my dumb question.  What would using these very cheap, industrial, vibration isolation pads do for amps and speakers?

https://www.amazon.com/dp/B07NLR9FHJ/

They are available even cheaper and is a wide range of sizes from various industrial supply houses.