i went out without my depthfinder, and the lake level was dropped ten feet overnight...therefore, i went to a place i thought was safe, but found rocks right below the surface...saw them too late, and dinged my stainless prop, which i was able to clean up, but the "rudder" below the prop got some pretty good impact...A) what do you call this area?, and B) whats the best way to fix damage here? can i just grind it as smooth as possible and call it good?<br /><br />thanks for the input!