I don't see any 3 point hitch on that fine John Deere so I assume you are pulling with the drawbar. If it had a lift, you could experiment with a skid (or a plow) on the front of the trailer and lower it to the ground to provide drag as needed. You could also search your area for the tongue off an M101 military trailer. It will have the surge brake set up together with a pintle ring. Although it maybe cheaper to buy a whole trailer rather than to start buying axles, etc.
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