How da hell do you pull off the hub from drum!

I know a machine shop can seperate these hubs from drums but is there any kinda trick to pop dem suckers off! My back already hurts from the rear shoes as I spent a great deal of pounding away those 20yr old drums.

Regarding the back drums. Why did you have to pound on the drums? Did you not pull the rubber grommet off the back side of the backing plate, and stick your flathead screwdriver inside, and manually turn the sprocket to take the tension off the shoes?