I have been baling behind the combine the last 2 years. I run a 6620 sidehill combine. I have the chopper on slow speed. I constructed a "boot" to catch the stuff right behind the chopper and trash spreader. I get about 2bales per acre. I have switched to non gmo corn as the cows like it much better. I usually bale 2-3 days after combining if the weather is dry. Best stalk bales you will ever feed. NO DIRT.