I'd build a surround out of wood that you could just lift on & off. Raising the sub for listening purposes will affect SQ.
One room here the subs bens and MB columns are over 3/4 of a US ton. I can lift and place a 350 lb column pretty easy. Most folks can't. The 4 bass bens are 200 + each. They are short and tough to move. 1600 lb for the bass. Not a lot of moving going on in the lab/shop. The monitors are 375 each. LOL
Raise the bass off the floor. It will be the best you ever had. I use columns. The only good way to deal with bass, mechanically. Decouple the bass from the floor, and enjoy less distortion, vibration, and clutter.
The clutter is behind all the isolation crap you need because of vibration.
One pair of OB servos and one pair of Mid Bass Columns here are almost done. They are on Queen Ann style legs, for a listening room. WHY? The servo, decouple combo, does one thing very well, the
house stopped shaking, and started MAKING, BASS.
Dropped the bass distortion by 15% or more.
The, low mid, mids, HF, and UHF can be heard clearly for once. You hear every bass notes, not just one or two at 30 db but at 130 db..
Hope you don't get the "swarm flu". it's spreading like wild fire... like folks don't know what bass is or something...
Regards