Abstract: A rotary table for supporting items within an enclosure includes a base having a planar top surface, a central through hole, and a radially extending circumferential flange, and a bearing retainer having a central through hole and an array of barrel-shaped recesses defined therein, arranged on plural concentric circles. Each of the recesses loosely contains a captive ball which partly protrudes from both top and bottom ends of the recess, each ball bearing against the top surface of the base. A rotatable plate is supported by the balls, and retained with respect to the base by a central post that extends downwardly through the central holes in both the retainer and the base. The ball retainer and the base have similar polar arrays of reinforcing ribs, to provide a strong but lightweight unit.

Abstract: A troll line depressor includes a pair of triangular wings with a dihedral angle of about 100 degrees therebetween. A rigid bridle connected between the upper and lower ends of the depressor provides a sliding connection for a ring at the end of a towing line, so that the depressor normally develops hydrodynanmic forces to depress the end of the towing line, but can tilt backward to an inoperative position when a fish strikes, or forward to an inoperative position if the depressor engages river bottom debris.

Abstract: A troll line stabilizer disclosed herein includes a pair of triangular wings with a dihedral angle of about 100 degrees therebetween. A towing rod is connected to the wings at a point so as to create a downward force with respect to the direction of motion.