I am hearing a strange noise and getting a slight vibration. Just wondering if someone could listen and see if they can figure out what it is. I am not good with editing so the engine is mostly what you can hear. I added captions to the video where the noise is at. I can't hear it on my phone or laptop speakers very well or at all, but with headphones on I can hear it. Better when I put the treble down and the bass up too.
2012 MB F21 Tomcat - full ballast, 1100# bag in rear locker, 400# bag in front walkway, 1433 prop, 1100 feet elevation, 343 PCM motor.
Only happens when we put the extra ballast in the boat. Is this what cavitation sounds like?