Does anyone have anything to add that would push me to buy or not to buy the VMAX 150???

I’m replacing a 1994 115 Johnson and the fuel economny is poor. I have 3 teenage sons and my wife’s brothers family that love to tube and knee board. The 115 is getting a work out and seems to do all it can to pull the tube/kneeboard on my Lund Pro-V 1890. My thought is that the gas mileage can not be much worse using the VMAX 150??? Will not troll with it much, but thought the option may come in handy(mostly cranks and speed troll jigs) Will use it most of the time running from spot to spot on 5,000 acre lake. So it should not take much time and no need for all the speed to hit my honey holes