The way we did in back in the day was to adjust the seat so that you could put substantial upward pressure on the wheel with your knees, back the nut to the end of the shaft so that the threads don't get damaged, then rap the end of the shaft smartly with a substantial hammer. I've never had one refuse to pop loose. These days the worn out knees won't allow that exact method so I use a puller to apply the upward force then use my 3 lb. hammer on the puller shaft.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.