Ive been running a MW 14x19P (came with boat) on my rig with a 150 Merc XR4. Top speed loaded during summer months was right at 45MPH WOT at approximately 5400 RPM. I switched to a Laser II 13.5x22P that came with the boat topping approximately 50MPH at 4800. I know that 4800 is way below the power band range. Also, I do not have a jack plate. Can anyone recommend the best prop for my rig. I'm posting this here because I don't want people without ProCraft ProCaster experience giving frivolous advice. I know my rig is no speed demon but wanting to get the best performance possible.