I would recommend you look at outriggers. I've had experience with Focals in the past, and the biggest issue was keeping them from falling due to the narrow footprint.
https://soundocity.com/shop/
I suggest you use spikes, this will poke through the carpet and give you the least back and forth rocking motion.
https://soundocity.com/shop/
I suggest you use spikes, this will poke through the carpet and give you the least back and forth rocking motion.