Brake drum stuck

I have never seen a drum puller for this set-up.
The way I get them off is;
A) I clean the register with a small wire-wheel mounted in a die-grinder
B) I apply a little penetrating oil
C) I smack the outer diameter of the drum with a 2 pounder at 12 o'clock and directly over the mounting flange. Then I rotate the drum about an hour or two, and repeat. The smacking does not need to be life-threatening. It is the vibration that is going to do the work. Continue working around the perimeter for a couple of revolutions.
D) If this fails, then I move to smacking in a new direction. Again at the outer diameter, but this time on the side of the drum, next to the corner where it rolls over to the top. And again rotating after each smack.
E) on particularly tough ones, I will dig out the air-hammer and vibrate all around the studs.

Keep in mind that all this pounding goes directly into the wheel-bearings.