My speakers are Hartley Reference, yes the one with the 24" woofers (each powered by ARC SS amps running as mono blocks in a tri-amp system).
They weigh about 300 lbs each. I use teflon footers that are about 1.25" in diameter so that I can move them without tearing up the new heavy duty vinyl plank flooring over concrete.
As an experiment I balanced a nickel on edge on each speaker. Actually I thought that they wouldn't last one listening session. Well to my delight and amazement they remained exactly where I put them for over a month. Okay enough already, I got tired of looking at them.
Just one guys experience, couple...decouple...whatever sounds best to you.
Regards,
barts