Abstract: An exercise apparatus which includes a ring shaped cushion member dimensioned and configured to freely allow a human torso to enter therein in generally axially aligned relationship and with clearance about at least a portion of the associated human torso. The apparatus includes structure for supporting the ring shaped cushion member for rotational movement about the axis thereof and structure for receiving the feet of a user disposed in axial spaced relationship from the ring shaped cushion member.

Abstract: A convertible house trailer comprises a cabin portion containing the living quarters, a road wheel assembly, by which the cabin is supported on land, and having a movable linkage connecting the road wheels to the cabin. The road wheels may be retracted upwardly, when the structure is used on the water. Typically four floats, comprising front floats and rear floats, are attached beneath the cabin on a movable linkage, each of the floats comprising a flat-bottomed elongated float structure with the bottom surface of the floats being directed downwardly. An extension mechanism is connected between the cabin and the floats which may be operated so as to extend the floats from a first upwardly retracted position, downwardly into a second position, in which they are extended beneath the cabin at a slight outward angle for use on the water, when in motion, and a third fully outwardly spread position, when the floats are extended outwardly to either side of the cabin, for use in a moored or stationary condition.