I am a stainless guy too, but... I do not think you will see a noticeable difference between a SS and an Aluminum prop with a 75hp motor. Once you cross the 150hp threshold, there is a difference. I am talking about hole shot and top end speed. The aluminum is forgiving on you lower unit if you hit a rock or stump. The SS is non forgiving. The aluminum will nick up, but, better your prop than your lower unit. You can buy 3 Aluminum props for the price of one good SS. It would be aluminum for me in this situation. Composite for a spare as Ranger09 said. I have been dealing with Power Tech props in La. Their customer service is second to non. You give them all the info, they plug it into the computer for the correct pitch. They will let you return a SS prop for a difference pitch for a small fee if they are wrong about the pitch. They exchanged mine 3x, until i was happy. great company to do business with. Remember, your tach is your friend when deciding what pitch to get. If the pitch is wrong, you will never get the top performance from your boat or motor.
