I may be weird but I have no desire to and actually get nervous going much more than 35 mph on the water. People hit rocks all the time on the big lake and no one ever plans to hit one either but still it happens.
I have a Harris 250 grand mariner with a Merc 300. GPS has shone 48.6 MPH a lot of weight moving that fast, pretty much runs away from most fishing boats with 150 HP . But it drinks more fuel than a Drunken Camper Screaming at the Sky !