Engine is running rough and knocking. I can hear a slight ticking noise. Won't plane up....about 1/3 power with Max throttle.
Kids overloaded the boat today and tubed....

Last time I had a similar problem on a Merc it was a power head failure.

I can run it slowly. My mechanic is across the bay.

I was thinking about running it over slowly.

Thoughts? Bad power head?

This was the first trip of the summer after the long winter so could be improper winterization?

Thanks for any help!!