M_Boats: Chewed up rudder

I just wanted to post this so that others might avoid such an incident. I ran my M-15 aground on a sandy bottom, which would have been no problem, however as the rudder kicked up I turned it unknowingly into the prop of my engine. I took about an inch off the trailing edge of my rudder that I will now have to fix. I don't know if this has happened to anyone else or if it has been posted before but I wanted to make you aware that this can happen.