Abstract: A trailer arrangement is disclosed providing support for a pair of sail boat hulls which are positioned on the trailer in a partially inverted position tipped inwardly against an A-frame central storage enclosure, which enclosure has inclined sides to each of which are affixed a pair of hull rests adapted to receive the boat hulls. The boat hulls are retained in position therein by a series of clamp arms which are pivotally supported so as to swing into engagement with the hull bottom surfaces and having extensions pivotally connected thereto at the outer ends and which are interlocked with each other to secure the clamp arms in engagement with the boat hulls.