As a side note, when the water get rough you need to trim it back down to
hold the bow down to smooth out the ride. I reccomend reducing the speed in
rough water as well for safety reasons, but also so that you do not lug the
motor since it will be less likely to reach its top RPM at WOT.

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"Bob La Londe" wrote in message
...
Trimming the motor up has the afect of changing the line of force relative
to the line of the boat. In affect it pushes the back of the boat down.
In
many cases this will result in a shorter section of hull in the water
because the front of the boat lifts up.

In most circumstances this will give you more net speed due to reduced
friction with less surface area of the hull in the water. However!!!!!
You
need to watch your tach. Many new bass boats are designed to not require
as
much up trim. They are high performance racing machines. Trim up the
motor
and watch the tach and speedometer at WOT. (assuming you are not under
propped or over propped) When the you stop gaining speed trim it down
just
a hair and your boat will most likely be running its fastest under the
current load. Never over rev your motor. If you also have a jack plate
you
will need to play with your motor at different heights on the jack as
well.
You should have a water pressure gage, and if the water pressure starts to
drop you need to lower you motor immediately or you will overheat it.

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"Phillip" wrote in message
...
I have a question regarding a bass boat and a larger motor.

when I get my boat on plane I know is a small portion of the boat
actually
on the water. What effect does trimming the motor up have on the boat,
is
there more or less boat actually in the water?

Thanks