If your wheel cylinder bolts round off like they usually do use a power file to grind the heads off. I tried everything else for over an hour including a dremel and two grinders before reaching for the right tool, the power file ground off the heads in seconds.
I've given the bolts a liberal spray with easing fluid. I've got the easy to get a bolts out. The bolts that are behind the hub are rusted lumps. I normally have good luck with the air hammer. That'll take the bolts straight off in seconds. If it doesn't, I'll just use my big prybar to lever the wheel cylinders off.
It's a job I could do without. This year it's being a pain in the ass.