Abstract: An accessory kit is disclosed for extending the length of the tongue for a trailer, particularly a boat trailer. The kit includes telescoping related members, a tubular member detachably mounted on the tongue, a gear rack selectively movable therein, and a gear drive device mounted on the tubular member and operatively engaged with the teeth of the gear rack. A hitch ball is secured to the tubular member for detachably supporting the ball hitch of the trailer while a ball hitch is secured to the outer, extendable end of the gear rack for connection to a trailing vehicle, thereby substituting for the ball hitch of the trailer. In another embodiment, a d.c. motor is mounted in the tubular member for driving the gear device for permitting the extension and retraction of the gear rack from a remote position. Operation of the d.c. motor may be by a remote control device.