Abstract: A trim tab for a power boat comprises a first portion adapted to attach to a transom of the power boat, a second portion adapted to contact, at a variable angle, a fluid in which the power boat is being operated to control a trim angle of the power boat, and a live hinge adapted to hingedly affix the second portion to the first portion. The first and second portions may be constructed of aluminum. The live hinge may comprise a strip of a thermoplastic polymeric material having a relatively thin center section spanning a gap between the first and second portions and having relatively thick edge sections on opposite sides of the center section. The thermoplastic polymeric material may comprise polypropylene. The first and second portions may each define a gap for receiving one edge section of the live hinge.