Abstract: This invention relates to a device useful in connection with bridging two sections of an extension ladder. The device takes the form of a sleeve structure which extends from the side rail of one section of a ladder to co-operate with the side rail of another section of the ladder. The sleeve member is guided and maintained in position by cutouts formed therein which co-operate with ladder rungs. The sleeve member has a cam portion. The invention finds use in connection with facilitating the use of a hoist or the like used with an extension ladder, and provides a smooth track for the usual wheel or roller assembly on which such hoist travels.