I'm attaching several pictures of what I have used for cob & shuck wagons in the past. This past fall I took the front filler panel off of one of my Stan Hoist barge boxes. Behind the filler panel the wagon has a "v-neck" that was useful years ago when pulling these wagons behind a picker or picker-sheller. Then I tied a couple of stiff woven wire panels we have hanging in the shed to the top of the wagon. Now with the open front on the wagon and a "perforated" top, I can blow husk into the wagon and the wire panels let the excess air out but catch most of the husk. The whole back of the wagon opens up for easy dumping. Don't forget to undo the spreader chain in the wagon before filling it with husk - otherwise the husk will catch on that & won't slide out. Many years ago we did this same thing with a Rhorda silage wagon and also with a JD Chuck Wagon with a roof (didn't need the woven wire for that one).

Now for cob wagons - I have used most anything that will hold cobs. The last few times I shelled, it depended on what the person who was getting the cobs had to put them in. If you look thru my pictures, you will see a Rhorda wagon, an IH manure spreader, tractor loader bucket and several different brands of flare box wagons (my favorite). The flare boxes are what we used at home when I was growing up (Nu-Bilt/Lindsay boxes). They were easy to fill and the whole back end opened up and was held open with prop irons so they were easy to dump out.

Jdtom, that's a great idea on the shuck wagon setup. We grind all of our ear corn these days, but I remember loading the shucks with a pitchfork onto a lowboy to take out to the cows. For cobs, we used an old wooden barge wagon that would no longer hold shell corn. Rather than try rebuild the box, we added an extra couple of feet to the sides. Cobs are so light I don't think we could have ever overloaded it. It worked for that purpose for decades past its use for shell corn. I still have the running gear and hydraulics, but I have no idea of the brand.