Should I decouple my subs too?

 I just got off the phone with the REL guy and he said NOT to put footers on the subs as they perform better coupled to the floor. 

If you would like I have a long list of manufacturers I can put you in touch with, every single one of whom will tell you their products are so perfect nothing you can possibly do will ever make them any better, might void your warranty, and quite possibly be fatal. 

The last thing I would ever do is ask a manufacturer how to make his product even better. Worst thing you could ever do.

@oldhvymec. 
Very cost effective idea. I like it ! 

@millercarbon. 
Sound wisdom. I wish I would of thought of that. Thank you!!

I’d isolate any sub on a suspended plywood floor for cleaner more articulate bass that does not obscure midrange.  Take a look at affordable Auralex Subdude platform to do the job 

Your best most cost-effective move will be Nobsound springs under the subs, and Townshend Podiums under your speakers. Read the reviews and comments, Gaia do not seem to be worth the huge price differential vs Nobsound, but Townshend is worth the huge price differential over Gaia. Also it just makes much less difference under subs, compared to mains. 

Not kidding about the manufacturers btw. Called a bunch of em. Total waste of time. And yes one did tell me I would kill myself. And no this is not the AI Millercarbon, I am still here even in spite of having committed the sacrilege of improving upon perfection.