That's great, thanks for sharing.  Anyone remember the backing contests they used to have?  As farm kids that was always fun.  Putting a 16 foot swather through a neighbors 10 foot field gate was always interesting.  And as someone else said, backing a loaded hay rack into the corn crib to get it out of pouring rain.  Lots of learning experiences as a young farm kid back in the 50's and early 60's.  Thanks for the video.