The 'process' part is right on.
True enough. Things which vibrate can really be improved using isolation gizmos.... but everthing has a resonance and could benefit from likewise dedicated applications.
The thing which amazes me is not only does the type of aftermarket footer alter things, but so does their placement. True too, the platform matters as well.
BUT here's the thing.... IMO you can get very good to great results here, and you can go nuts too. here's where inovation and trial and error work out well vs. $$$$.
Skim thru the archives for 'footers' & or 'isolation'.... you'lll get tons of info and tons of reasons pro & con for this or that approach.
how well damped your rack is will determine to some degree how much need there is for isolation devices... or so I've found using skinny racks and fat ones. Glass & metal, vs, filled heavy steel. Wooden shelves vs. MDF VS. PLAIN OLD PARTICLE BOARD.
RW DEFINITELY V
HAVE FUN.