Around us in central KS, farmers try to double crop all of the time. Most years, by the time they get the second crops planted, the rains have stopped and the temps soar. I enjoy watching them lose their shirts each year. last year much of the double milo in wheat stubble never headed out. All they are doing is depleting their soil by never letting it lay idle. Try if you like, but I think it looks pretty bad to a landlord to have a cruddy crop growing on his_her land.