... slide on new boot with one of those funky cone applicators they tend to come with nowadays ...
You don't need to do anything to the hub.
Just undo the wishbone at one end, usually. Some more minor dismantling and the wheel can swing out and the drive shaft is free.
Just replace them, it's not expensive, you don't even need to take the wheel off in most cases.
My old Uno didn't need that. As I said, you just whip end of the wishbone off at the hub end, and the drive shaft with boots is almost free, once you can swing the wheel out.
Are you on about the inner CV joint there? Leaving the spider housing in the gearbox?