I have a '84 150 Merc. on a 1983 Ranger 340 V (18 foot). The motor is operating fine. Getting out of the hole and up on plane is way slow and arduous. Once the boat is on plan it just flies. I do not top end speed...just want to get on plane fast and operate efficiently. The prop. that came with the motor is a Hoss Triton, 14 x 24. Any recommendations?