Unmount and mount an atv tire on rims in 20 minutes - without a tire changer

Tire is for my UTV (Side by side actually) Honda Pioneer 2015 and the size of this tire is 27-9-12. I changed all 4 tires but filmed only one. Got two 27-11-12 on the back. I initially installed it on the wrong rotation way and this was the last one to do so I had to unmount it, flip it, then re-mount it ! I know I scratch the wheel rim, but it's for my side by side so I don't mind :)