I have a 1997 zx 200 with a 225 mercury efi with me and my dad n half tank of gas it runs around 64 mph n 5800 rpms. The boat really dont like the prop.The prop is a 24 trophey... I am wanting a 3 blade and was wondering what size.. I feel this is a 72-75 mph boat...Am i off on my thinking what it will run.. Thanks shane