I have a 1979 mercury 115 hp outboard. I have a stainless steel 21 pitch prop. I use the boat for skiing 99% of the time and am looking for a new 19 pitch prop to get up easier. I am looking at the ss michigan wheel rapture blowout 13 1/4 x 19. Does anyone have any other suggestions or is this a great prop. It's under $200! It's a 1978 phantom tri-bow runabout. Thanks! 