It is an interesting idea but how does the guy get into the middle of the load when it jams up with a broken bale Also... why bale with small "one man" bales when you are working for machine handling 

How many guys are inside that law stacking that hay you need a roller that you can move around inside 10 20 ft long whatever you need have one guy pulling the bells off and rolling them on the roller to the guys that are stacking eliminate the workers you got up there just a suggestion