The same person has more video here: http://www.youtube.com/watch?v=8ia1vkZ5hpI&feature=share&list=UL8ia1vkZ5hpI

I am curious how they hitch on the the trailer. I don't think my BullDog screw jack would pick it up.  What I know about baling would fill a very small book, but it looks to me like those single axle trailers would be loaded pretty heavy