If you flat tow an M715, there are 3 key things to consider...
Always have a front bumper in place if you are hooking to the front tow shackles. The front frame horns, without the bumper in place, will twist...this is the front of the frame twisting.
If it has the stock steering box and you want to keep it in working condition, you must take the steering apart somewhere. The box wear out quickly when inputs come from the tire to the box instead of from the steering wheel to the box. Taking the steering apart on the passenger side where the rod from the steering box hooks up over there is the best place I think. That bar can be tied or chained up to the frame out of the way and still the tie rod bar keeps the 2 front tires in synch..
It would be advised to loosen the brake shoes as much as possible or even remove them altogether. The brake shoes have engaged the drum for several people who have flat towed their trucks. Most caught this before severe damage occurred fortunately. I wasnt so lucky and my front brakes drug my tow vehicle to a stop, caused a fire, wrecked the entire front axle and ruined the trip we were on.
Bottom line, these trucks do not appear to have been made with flat towing in mind for more than short distances, to get from a broken down or stuck place to a wrecker...wheels up towing on these trucks is the only manual recommended way to move them.
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!