I have an Ipb 14 with a 25 yamaha outboard on it. Concerned about the prop because of the numbers I am seeing. My first concern is the prop is "less" than OEM. From what I can make out the only numbers on the prop are 9 1/2 10 1/2 P or something like that. My concern is the boat weighs around 240# dry hull, by myself (150#) wide open throttle I am seeing around 26 mph. Cruising speed which I run about 3/4 throttle, is around 22 mph. I feel with this motor and boat I should be at least high 20's cruising if not low thirties wide open. I am trying to acquire a tach to see the rpm's but for the time being... Looking to put a new prop on her. Should I experiment with a cheap Solas or just jump to like a 13P stainless? Boat gets on plane in a puddle so Im not worried about that. Any help is greatly appreciated.