Cut her down and strip out all the excess weight I think you will be amazed at how light that boat actually is. 11 pitch prop is my bet, the 9.5 will not get you over 16mph with the 11 you should get 18-20. Kind of depends on if you are fishing mostly by yourself or will always have 2 people in boat. Makes a big difference. I have a tracker PF16 and I cut the transom down and run a 9.9 yamaha (12.5hp actually) with a 11 pitch prop.