I agree that you should strap the boat, but that being said, to many people are towing large boats with trucks that are right at there limit for braking and then the driver waits until the last minuite to stop and here is the end result. When you have a large boat behind you, you have to remember that you are not driving a sports car. Being on the road alot I see all kinds of accidents and alot of them are from drivers not looking far enough ahead to make sure they can stop in a hurry if there is a problem.