My first boat had 1200 hours on it when I sold it...never had a problem with it
My second had 125 when I bought it and was 9 years old....that engine blew after 65 hours
High hours without issues is a better sign to me then low hours and little use
Lots of truth in this comment ^^.
Engine hours are kinda like 40-yard times at the NFL combine; it's one of the quick and easy measurements you can point at, but it does not tell you the whole story of the engine/player.
Moderate to high-hour engines with good service schedules and steady-use have proven their dependability.
I have a 2003 Merc EFI with nearly 700 hours that still has 120 psi on all cylinders and impresses the mechanic every time he services it. That engine has been used steadily, but it also gets serviced once or twice a year since I got it.