Answer is 'it depends'. I think you are on the right track. Sometimes
the best thing to do is stand the tub on end, and walk it out of the
room like a refrigerator, or use a refrig dolly to move it from the face
side.
aem sends...

That is exactly what I did. It was extremely heavy and hard to
maneuver but I eventually got it out. And once I loaded it into the
back of the Ranger pickup it almost brought the front tires off the
ground.