As a general rule, if you're a small business owner, it's probably better to be a little overprotected on the liability side, versus the property side, of the insurance equation.
For example, carrying only the minimum amount of liability insurance on a vehicle that is required in your state leaves you vulnerable. On the other hand, paying $1,000 a year for theft insurance on a vehicle with a book value of only $2,000 will drain cash from your business and get you very little protection in return.