If you have a tow truck, you need to make sure it is adequately protected. After all, this is a valuable investment, so you need to protect it accordingly. When you are looking for tow truck insurance, you are probably looking for protection against severe weather, collision, and expensive repair bills.
On the other hand, what do you have in your tow truck on a daily basis? Is it valuable to you? If so, you need to make sure you protect your tow truck against the possibility of the theft of personal belongings. If someone steals something from your tow truck, is it covered?