I can "cruise" my Merc from about 3600 to 4200. Lowe rthan 35/36 and it's
not at a full "easy" plane. Past 4200 you can hear it starting to drink the
gas.

-W

wrote in message
oups.com...
Just looked up a couple of reviews for boats with the 115 HP Yamahas.
One "cruised" at 4000, the other at 4200.

If you're happy with the performance at 3500RPM why push it?

Once you're up on plane it is generally safe to assume that going
faster will use more fuel.