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Message: <blockquote data-quote="Midwesterner" data-source="post: 473979" data-attributes="member: 25351">Get the engine at the right height, I have a 20 hp four stroke running a 9.25x10 and it will run 24 mph at about 750 lbs and fully loaded at 950 lbs 20 mph @5,800 RPM.   The 20 hp is a dog, the 25 should be kiillng it.  I know my redline is 6,100 and the power band hits about 5,500.  This is on a 14' deep v with a utility hull.Local shop told me I was wasting time chasing performance on the 20 hp since it's not there.  They said stainless props on the lower hp engines is a no no due to weight.  Also said every pitch change will change the rpms by 200-400.I run this tach, just wraps around the coil, there are two versions and one is built for outboards and down the page.<a href="https://tinytach.com/gasoline-tinytach" target="_blank">https://tinytach.com/gasoline-tinytach</a></blockquote>