Make sure you pull the drive shaft. The back bearing in the transmission does not oil when it is in neutral and will burn up. Unless you have something as heavy as the truck itself to tow it with, I wouldn't tow it. You won't have enough brakes to stop it in a panic situation. I have a truck towbar that uses a pintle hook on the the draw bar and slips into the pull hook holes on the truck being towed. I then put a light bar on the rear and hook air into the drive axles of the truck being towed to they have brakes. Anything less than this is dangerous and you are exposing yourself to liability if anything happens. 100 miles is a lot pf exposure.