Alright, after reading the "YJ energizer" post question it has gotten me to thinking. I'm interested in a real discussion and explanation of why there is such variation in Jet boats? With a BBF and 550hp he is only running 47mph? That seems crazy to me.
I realize the obvious regarding HP and Pump = Speed output
But does more of a v-hull etc really impact speed that much? The numbers on a lot of Jet boats are just all over the place