I have also been looking for a rack of some sorts,I saw posting where the auger was mounted to the reciever w/ iron and the auger in a otter
tube the tube was tilted 20-30 degrees.
I would rather mount it to the brush gaurd on the front of the machine and store/haul it flat.
I have seen baskets that mount over the hood, but they are attacthed to the rollcage, no good w/full windshield.
My thoughts are to fab a pair of large padded hooks off of the brushgaurd.