Hi fellow Moniquers'
I too have purchased a Monique Rack mount, this very day. Needless to say I am very excited and looking forward to it arriving.
Some weeks away yet.
Now, I know you say she is tough, and perhaps I am over thinking things but at this stage I will never locate Monique on top of speaker cabinets to avoid excessive vibration. I might just keep her on the ground so she can never fall, with some kind of vibration isolation solution for the times I have Monique turned on ( titter, titter

)
I am investigating a 2U flight case rack with shock absorbing on the mount rails. Alternatively one of those foam padded resin equipment cases ( The Nanuk 945 seems like a nice one )
In my 'googling' I have also stumbled across various Tube dampener designs that claim to do all kinds of magic for tubes, but this may be in the same realm as spending hundreds of dollars on a power cord. A matter of diminishing returns.
What say you, fellow Moniquers' ? Should I seek help from someone with a consulting couch who asks about my childhood perhaps ?
Peace and Love