My experience is with a whole different class of boat from yours. I added them to my 16' War Eagle with 50 hp Yamaha tiller for the purpose of being able to get on plane in very shallow water. It worked perfectly for my application. They made the back of the boat ride higher in the water and also provided a neat set of "steps" for climbing in the boat. There is really no bow rise when you gas it from a stand still, the boat just rises out of the water and stays pretty level the whole time. The only negative I've seen is that trimming the motor up, while on plane, doesn't raise the bow any at all. So, in my boat at least, I lost a couple of MPH's at full throttle.