It's better to do it on the trailer on the ramp - so you can vary speeds and
loads a bit.

But running them both 1/2 hour in the tank will only help speed up the break
in

-W

"bobl" wrote in message
...
Just bought a new boat and motors (8 hp and 90 hp hondas) and was
wondering if it would be acceptable to perform some of the break in
hours in my driveway using a tank filled with water. I have access to
some large stock feeder tanks and had heard that this was actually
done by some dealers. Any advice?
thanks!