I'd certainly give it a go Sally, but I'd also have to invent a tractor to go with it, so maybe not!
I have seen a clever design before whereby you put the feeder OVER the bale, then roll the whole thing over by 180 degrees using a quad or tractor so that the bale ends up sitting inside the feeder. I don't know what it was called though - I just saw a farmer loading one once when I was out cycling.