WHAT I HAVE IS A 1972 11' CHECKMATE PLAYMATE WITH<br />A 25HP NISSAN OUTBOARD.I INSTALLED A CMC POWER TRIM/TILT ON IT AND I HAVE A 15 PITCH BALLISTIC<br />PROP ON IT.I'M RUNNING 6000 RPM'S WITH THE BALLISTIC PROP ON IT NOW AND MY SPEEDOMETER SAY'S 42 MPH.WHAT I NEED TO KNOW IS HOW TO GET MORE...