I re read my post from yesterday just now and realized I might have come across as an equipment snob. That was not my intent.
I have flat towed my M715 behind a M1009-top speed I could steer was 32. Behind a 3/4 ton 4x4 Suburban-top speed I could steer was 40. Behind my M35A2 without even knowing it was there besides seeing the shadow in my mirrors.
I have also used my M715 to flat tow M1009 trucks. Couldn't tell it was there except needed wider turning radius. Several 3/4 ton square body suburbans. They didn't like getting towed as much as the M1009's. I even was stupid enough to flat to my 1952 Gasser M35 behind the M715 for almost 50 miles. 25 mph was the top speed I had control of the combination.
So, when I suggested getting a bigger pulling truck and a more than big enough trailer or hiring it out. It was because I have been there and done that.