I simply use a set of of the plastic "sliders" that you can get for moving furniture under the feet of each pinball machine in my collection. Easy-peasy for moving them around if you're just pulling them out to service them, re-arranging them, or moving them across the room or the house.

Sliders (resized).jpeg

If I need to actually transport a game, it's not hard to take it apart (Remove 4 head bolts, disconnect the Jones plugs to the head, stow the cord, and remove the head; then take the two back legs off and slowly lower to the ground; tip the game onto its end so it's standing vertically on its built-in gliders; remove the front two legs; put on a dolly and transport to my Tahoe).