As for swinging an aircraft without someone on board who is at least competent to operate the engine controls, unforgiveable.
Sometimes it's just not possible. If you're operating solo, without other pilots to hand, for example at a remote, deserted strip, then you have no other options. The risks are obvious and solo hand swinging should not be undertaken lightly, but sensible precautions can be taken. I always use chocks and when necessary keep the tailwheel tied down during the start. (Also a Champ owner).