Hi, I just bought a 1979 Mercury 200 20hp in mint condition runs great only problem it has a 2 blade prop ( which still pushes my 14' boat pretty darn good) was wondering if a 3 blade would make a difference? Will I have more speed and better holeshot? My prop now is 11" x 9 pitch 2 blade i am buying a 9 1/4"x9 pitch 3 blade. Any help would be appreciated. Thanks, Justin