I recently bought a used boat "Funliner Fantastic 195", a daycruiser simmilar to "Bayliner 1950" and I have a problem with it, on full throttle my rpm doesn't go over 3100. Current top-speed of the boat is ~26 knots.<br /><br />Engines is Mercruiser 3.0 Liter 130 HP (1988 or 1990, I think) with...