My advice is similar but maybe different in that I was driving a 17' U-Haul Ford truck that was filled and the M715 was the only thing on the trailer. I had checked the load for proper position and had no extra weight on the trailer. The M715 exceeds the trailer capacity by about 200 pounds so I didn't want to stretch things. I even had the winch off of the the M715. My experience was that I could hardly feel the trailer behind me. It always tracked true but again, it was being pulled by a full 17' truck.
"Your Mileage May Differ..."