Pipe would do the job three or four sections as wide as the safe tip it up and roll it, I moved a seven person spa, alone, with four sections of pipe and two 2x4s.
use pieces of 1-1/4 or 1-1/2 inch copper or steel pipe, cut to length of the shortest deminsion of the foot ptint of your safe.pry up one side and get one underneath and start rolling adding a roller 8-10 inches apart. you can turn corners by angling the rollers. go out the door on planks to your trailer. works great.anchor your safe to the floor. one guy can move it real easy