I have my Spacedeck on a heavy welded steel rack, so I first used isolation in the form of Vibrapods and Vibrapod Cones.. This worked well with the stock Spacedeck and base.
But..
Later on I found a thread on Audiogon which spoke about placing one raquetball into a vibrapod base for a suspension system identical to the Gingko clouds.
I tried 4 black Ektelon raquetballs on Vibrapod bases, each holding 10 lbs of the 40 lb Spacedeck.
This worked perfectly for me.. it gave an immediate increase in transparency with deep and tight bass, and a drop in the noise floor. (and it even looks good with the all black Spacedeck) It sounds so good that my search has ended for upgrades to my analog source.
Thanks Again Audiogon!