No offence taken. The boat is new to me, so I really am not in tune to it yet. I am more interested in knowing my wake speed, so I do not get bothered by the OPP.late to the party however this is your best answer.
No offence but if you are 'in tune' with your motor speed is not generally a concern. I really do not care how fast i am going i want my RPMs right, sound in my ears cool, and just humping down the water. If I sense something off, I get my phone out to check gps speed.