Used to know some contractors would keep two sets of track assemblies on hand, with the alligator master links it was a short job swapping from LGP to Standard shoes and back again. Lay the tracks out on the ground, line the machine up, bust the tracks apart, push or pull the machine like it was on rails (thus the term"rails" in common usage) onto the new set, pull the end of the track over the top and couple back up. Two men with an excavator or stout service crane could usually bang it out in a couple hours.