Don't change your prop. This its not a good thing without making sure your numbers are right. This could cause engine failure due to over rev our excessive lugging. Drop 2 Amish bags off the side tied to your cleats. Should get down to almost any speed you want. I use 2 36 inch Amish outfitter bags one on each side.they are out of the way for landing fish and i can run at any speed i want best bags made!