Arkansas Boating Practice Exam

Strong safety chains crisscrossed are used to support the trailer's coupler mainly to provide added protection in case the main hitch fails. This prevents the trailer from completely dislodging from the tow vehicle and causing a potential accident. Option A may also be necessary for securely tying down the boat, but it is not the primary reason for using the chains in this manner. Option C is incorrect as emergency towing is typically performed by a tow truck or another vehicle, not by crisscrossing safety chains. Option D is also incorrect as safety chains are not intended for locking the steering wheel.