Is the hub rotating not allowing you to apply enough loosening torq? If so a long flat tip screwdriver slid in the rotor vent slots and placed against the floor will prevent that.
Or is it the length of the breaker bar you have?
Soaking the bolt heads w/penetrating
oil can help as well.
You can use an impact gun if you really want to. Be aware though if you slip or are not on the head squarely it can spin and chew up the bolt head hex and then you may have to cut/grind the head off.
I still have guns left over from my Auto dealership and Heavy equipment days but hardly ever use them.
Impact guns are outlawed in aviation due to the stress they induce to bolts.
So after 40+ years in Av maintenance I steer clear of them unless I absolutely have to use one.
PS. They really F-up the finish on lugnuts as well, lol