The invention provides space saving, locking and support features for most single pole trailer tongue, having: a support leg, which has the coupler hitch on the opposite end, pivots on the tongue into a vertical position where it acts as a support for the tongue. This leg is secured vertically, using aligned brackets on both sections, by a hitch pin or locking device, so that it can be locked in place as a deterrent to theft. When in the horizontal position, the support leg is secured to the tongue by a hitch pin and may be connected to a towing vehicle. A flip-down leg, pivotally mounted on the tongue, which drops down when the securing hitch pin is removed part way, to provide temporary support for the tongue while the support leg is being moved to the vertical position.