When I first started out here 25+ years ago, we were in the small square market... 30-40,000/year. Mostly delivered by us on a 30' gooseneck, and packed away into customer's barns. I had built a "clamp" on the tractor loader that squeezed them into a tight 36 bale pack... could put them in my barn with it, and recover that stack and load the trailer with it, but I had to stack them into that clamp out of the thrower bale racks by hand. We had 15 of the 9x18' thrower racks, and two NH 575 balers.
Looked into that grab system, but never went there. Also looked hard at the "BaleBandit" and "BaleBaron"... too much money, but nice concept.
Glad we "retired" from the small squares (we were ALWAYS re-tired when doing those), into rounds and my own beef cattle! My "clamp" was "modified" and now chooses to identify itself as my "round bale unroller", works fantastic, been unrolling 500-1000 bales/year with it for the last 5 years, would never do another small square again.
Growing up, we would challenge each other to see who could put the most bales on a 7x14 flat bed wagon. Those loads would typically be 13-15 high... and we were on hilly ground (those big tall loads though HAD to be built on the flats on the top of the hill... and the icing on the cake was that the load didn't count unless it made the trip all the way home and up to the elevator to unload! You got really good at making a good tight load. I think the high count was something like 175 bales.
When we were making the throw rack loads, we would challenge each other too... you had to get really good at getting them to land and then flip over right in front of that back rack without flipping over it on the ground. We didn't add any backstops on the top of the back rack either, cause our shed wasn't tall enough to allow for it... the rack itself could hit rafters out by the edge, and the door height wasn't as tall as the center of the rafter bottoms. When you did it right, you could easily get them "stacked" about 3 layers above the rack. The "big loads" always had to be "taken down" to fit into that one shed... the "big shed" though has 16' clearance, so you could roll right in with them there. I could get up to 240 bales on those, with just the thrower and nobody "restacking" to pack more on. My son ran one of the balers... and he wasn't being too careful about chucking a bunch of them over and on the ground... When he started out on it, I would go around and help him pick them up... Finally I told him that we each had to pick up any bales by ourselves that we threw over the rack. Didn't take him very long to get pretty good at landing them in there right without losing 'em.