Have a digital tach on the outboard, will turn about 5500 RPM on the mid grade, but can get around 5700 to 5750 RPM out of it on premium.
Trimmed out just right, I can get 65-66 MPH out of it on premium and 61-62 MPH out of it on mid grade.
And at 2.5 miles to the gallon wide open, price don't matter, there's fish to be caught.
Boat = Hole in the water you constantly throw money into, LOL.
A buddy laughed when I told him about the V-6, 225 horse Honda on our pontoon. He went for a ride here and I put it to 55 mph (I thought the sun top was going to fly off) and he understood the logic.