Happy Troller - Small PlateSmall Troller: Fits outboard motors from 20 - 50hpFor the Fisherman who thinks he has everything!Slows even big motors down to that ever-so-slow fish tantalizing speed.A significant invention in the sport of troll fishing, Happy TrollerA(R) mounts on the anti-cavitation plate to allow fine control of trolling speed. At cruising speed, your boat's stability is enhanced.Locks in down position for trolling.Locks in up position for cruising.Happy Troller is the answer to correct trolling speed. Use it year-round in all boating activities; salt and fresh water.Key Features:Reduces troll speed in down positionActs as a stabilizer in up positionMaintains stability in bow-light boatsSmooths out ride in rough waterReduces porpoising and cavitationMade of only highest quality stainless steel and marine aluminum; clear anodized aluminum finishInstalls in 15 minutesStainless steel mounting hardware and installation & operating instructions provided with each unit