I have a 2006 PT 190 with a 90 HP Optimax with a 4 blade split fire 12.5 x 19 (just purchased). Mounted in the 2nd hole. I am getting 39 mph at 5180 rpms. These readings are from my Mercury VesselView. Does anyone know what I can do to get more speed. These readings are a 3/4 full load (1/3 tank gas) in boat with 2 people (450 lbs). Shoots out of the hole great and corners great I know I should be able to get at least 44 or 45 mph or so. I barely got 40mph with just myself. I bought the boat with a 24 pitch Laser II. That was like driving a stock Mack truck thru the swamp bog hence the 12.5 x 19. I would appreciate any input as funds will allow for the purchase of one more prop (SpitFire x7). I'm new here and hope I am posting in the right place. I posted this same question on the Tracker page too. Thanks and BBC Rocks. Fish On!!!!!!