Park Insurance

What type of insurance and coverage should you have on your mobile home park? What if you had a fire, tornado, flood or problems with your water, sewer, gas, drains, pole lighting or bigger items like sewer lift pumps. What about park vandalism or damage to signs or fences? Should you stick with the original owners Insurance? How to check for existing insurance claims in past for repairs etc. Have you ever had increased insurance or none due to many claims by the past owners? What is the best insurance company to go with and does anyone else offer insurance for just sewers or other park infrastructure? The other thing I was thinking about was liability insurance if anyone got hurt in the park?