Abstract: A long, narrow, rigid panel supports a row of wheels beneath each long edge. The wheels are spaced sufficiently close together and are small enough to roll over the usual size joists and trusses and to span at least two so that a person lying on the panel can propel by arms or legs over an irregular surface such as in the confined space of an unfinished attic with a low roof. The device separates into two parts for ease of storage and access to confined spaces. The two parts join at an angle of less than 180 degrees. Since the two joined parts do not lie in a common plane, the user can balance over, and be supported by, the four wheels adjacent the joint when on a flat surface. This makes it easier to pivot and change direction of movement than when all the wheels are in contact with a flat surface. Optional plow-like devices can be attached to the front end to move protruding insulation out of the way.