new to boating so i think it is called the skeg on the very bottom of the lower unit (fin) i think my is bent a bit can i straighten it out? if so how? 1973 merc 150 hp inline 6<br /> when the motor is all the way down and shortly after plane the boat will "twist" and kind of turn to the right. this is the only thing i have found to be bent, it is bent to the right. i don't know how it was bent but i have only had it the water twice.