Re: Right or wrong prop
Your prop choice depends on what you're trying to do. If you want the highest top speed you can try a longer pitch prop, but it may cause your initial acceleration from stop to suffer.
If you want to keep your low end acceleration (for example, if you're pulling up a waterskier) you can keep the current prop and just be careful to avoid opening the throttle all the way.
You may get better response to your question if you post it in the "Prop Questions" section on the main iBoats page since it's a general prop question and not specific to Four Winns.