I did search, but i am new to this forum so forgive me if this has already been covered. I am sure this is a popular topic that gets asked about a lot, but i didnt find anything for my situation. I have a 640lx with the 4 stroke EFI 60hp engine. Looking for a new prop, i am topping out at 32/33 mph with myself, small passenger and light gear. Can't go full throttle currently without the RPM alarm going off so im assuming with a different prop i will be able to use all of my power band? I am new to boats, this is my first boat so go easy on me. Thanks everyone.