The upright we have had small roller wheels and troughed the old hardwood floors when we moved it to install new hardwoods. It came back into the room on a path of plywood with quilts under the plywood. Currently sits on a piece of brown masonite hardboard on the new floor. A total pain in the keister.
We would never have made it if it had been a grand or baby grand.
I built my own cart just for moving pianos.
You can buy one at menards, I’m sure