There are several guidelines to follow when selecting the best prop for your boat/engine.
First, decide what kind of performance you are looking for. Take into consideration not only the weight of your boat, but the weight of the boat with a full load of fuel, equipment and a fishing partner. The easiest way to change performance of the boat is changing the pitch of your prop. If you raise your pitch, you should see an increase in top-end speed. If you lower your pitch, you will get up on plane faster. Keep in mind that changing the pitch will also affect your engine's RPM.
Next, consider aluminum v. stainless steel prop options. Stainless steel props claim better performance and last longer, but aluminum props are less expensive and therefore more affordable to replace. Identify the conditions you regularly boat in and use that in your decision making. Are you boating in shallow or deep water? If you regularly fish in shallow water, you run the risk of getting a ding on your prop. In this scenario you may prefer an aluminum prop which is more affordably replaced. Do you typically use your boat in salt water or fresh water? Stainless steel is often the best option for saltwater applications.
Elevation and other environmental elements can affect your boat/engine's performance as well. Be sure to consult your local dealer when selecting a prop to ensure it's the best option for your circumstances.
Review Crestliner's prop recommendations for many of the boat and engine combinations offered. For additional guidance, please contact your local dealer.