C.E. Smith Boat Trailer In a Box. Smith's Universal Trailer ships to your door by UPS and is designed for easy assembly using common tools. Includes everything you need to carry a small boat, inflatable or PWC up to about 12' long. Its galvanized steel frame is built strong and has an ample 800lb.capacity. Includes DOT approved lights, 5' adjustable carpeted bunk boards with dual supports, winch stand, winch with strap, 4.80x8 tires, hitch coupler with safety chains. Total overall length 140", overall width 54".