Won't help you much because I had LaScalas....
I took a piece of plywood the same size as the base of the LaScala, made it about 6-8 inches longer so it would stick out BEHIND the speaker.
I screwed this to the bottom of the speaker as an extra base plate.
Mounted a 3/4" sconce (might have been 1/2", I did this in 1994/5
Mounted a nipple to the sconce, mounted a "T" to the nipple and then put about 6' of painted water pipe into the air. Next put another "T", nipple and mounted a pice of plywood with trim around it so that in the end, I had a platform about 6' in the air "above and behind" my LaScala.
Regardless of where I pointed my LaScala, the speaker above would follow suite.
I had three Academy's and put one above each LaScala as the front effects.
The idea worked out fantastic other than the Academy's getting drowned out by the LaScalas. (I used the 3rd one for center which to me, was an epic fail)
Easy to do this with a massive speaker like the LaScala, don't know that it would work in your circumstance.
I tell the story every now & then in hopes that maybe it will help someone....someday.