Got them installed. Night and day difference! My boat is 150 extra pounds stern heavy due to larger than factory engine. I fought porpoising like mad, it would drive me nuts!!!! After trim tabs installed, amazing!!!! Not even the same boat. It would bow up like nuts getting on plane. Now it planes twice as fast, bow doesn't raise near as much and planes at half the speed!! I can hold plane at a much lower speed now too... I'm amazed. One more thing, when I would throttle down coming off plane the stern would sink right down and water would rush over my swim deck. Now I glide to a smoother halt and the entire boat drops down rather than stern first.
