You want to keep them on stands, but not too high, so you can tilt them back, aim so the tweeters are directed up to normal seated ear height. Some stands are tilted, or you simply add a block under the front edge.
Tilt beneficially alters the angle of initial reflections off the floor and ceiling, and you toe them in so the tweeters’ narrow wave lengths are aimed directly to you: that beneficially alters the initial side wall reflections. All adds up to better imaging.
If you have two listeners, both off-center, then try alternate ’dbx crossfield’ toe-in, aim the left speaker at the right listener; aim the right speaker at the left listener.
https://www.audiogon.com/systems/11516
here, I put a 2x4 flat above the front two wheels only, so the speakers tilt back, tweeters aimed up. One rear wheel, thus always wobble-free, and 3 is more weight per wheel than 4. Dual wheel furniture caster’s’ axels wobble less than single wheels. The skirt keeps them from tipping over. You can put anti-tip corner blocks, just a bit shorter than the wheels, so no contact normally, just if they start to tip.

this is my toe-in for two listeners
