I'm wondering if anyone has experience with a 150 hp 4 stroke Yamaha for water skiing, wakeboarding, etc? I currently have a 2003 Johnson 115hp 2 stroke. Motor works great except it doesn't have quite enough get up and go for water sports, especially with more than 2 adults in the boat. Thinking about stepping up to the Yamaha. Will this be an improvement for low end? Thanks.