I better get this in quick, because the record won't hold up long.
I did two weeks in a 30 year old wood powerboat with no problems. 1000 miles. I had just bought it. Figured I'd have a belt break, alternator fry, gauge quit working, depth sounder fail, head stop working,
something on a boat that old HAD to break. But it didn't. Of course, it made up for it over the next 3 years.
Now, if you're gonna count groundings and ropes in the props, then the above don't count...