hi everyone , my neighbour just bought a 1995 rinker bowrider with the 4.3 and mercruiser outdrive . anyway the boat is in pretty good shape except it has a 3 blade 21 inch stainless steel prop thats in rough shape , i told him to go buy a 4 blade 20 inch pitch aluminum, it will be alot better . he just came over to ask how the prop comes off ,i went to show him and this thing doesnot have a propnut on it , i dont have a clue , i have never seen anything like this before , it looks like it has some sort of c clip that holds it on . anybody seen one of these before ? how do you get the prop off ? thanks ..