i have a 1987 vip vision with an I/O mercruiser. when i try and pull a wakeboarder out of the water, it seems like its im trying to pull a building down. it has a 4 cylinder motor and i know it has plenty of power, so my question is...could it be my prop and all that ot is there something that i could do to the motor to kinda put some pep in its step?