Liability Insurance on travel trailers

I have been researching and comparing insurance for my travel trailer and find the biggest difference being when one company includes Liability and Property damage and the other does not. My feeling is that the trailer is not likely to inflict damage on others when it is parked in a campground and is covered by the truck insurance when being towed.

Check your policy for coverage if some one fell while walking down/up your steps when your parked in the campground.