Penta. Trolling Motor Propellers. Minn Kota. MotorGuide. Boat Propeller Topics. 3 Blade 4 Blade Altitude Aluminum Bent Blow Out Cavitation Change Chart. Cotter Pin Cup Depth Diameter Dual Fuel Gear Ratio Hub Inboard. LDrive Left New Prop Old Prop Outboard Outdrive Pitch Plastic Porting.