Re: props
You didn't know what boat stands for???? Break out another thousand!!!! LOL
Generally you don't need to "change" a prop unless it's badly damaged and even then prop repair shops can repair them. Some pitches give you different results, some more top end, some less top end, some are 3 blade some are 4, some are weedless props. It all depends on what you are looking for. And they aren't cheap to buy so unless you have a reason to change it like wrong pitch or badly damaged don't bother.