Operation & Performance; Trim / Tilt - Pro-Line Boats 29 Grand Sport Owner's Manual

Trim / Tilt

The power trim system allows the operator to raise and lower the motor(s) throughout an infinite number
of settings between its upper and lower limits. There is a trim setting that will yield maximum speed,
stability or maneuverability for every throttle setting. Refer to your engine manual for specific questions
regarding the trim and tilt.
For most conditions, the best all-round performance is obtained when the bow of the boat is slightly out of
the water and all motors are trimmed to the same degree.
General trim down (or "in") characteristics are:

Starting position for best acceleration to plane.

Lowers the bow, which provides better stability and ride in rough water.

Reduces boat speed and economy due to increased drag of hull and drive.

More spray over bow.
General trim up (or "out") characteristics are:

Raises the bow of the boat out of the water resulting in less hull in the water.

Greater speed and economy for a given throttle setting.

Greater maneuverability; provided prop does not ventilate during the maneuver.

In excess, the reduced stability can lead to bouncing, porpoising and propeller ventilation.
In addition to providing ideal boat performance, the power-trim/tilt enables the motors to be raised (tilted
up) for trailering, beaching and launching. Avoid operating the trim switch if travel of the motor is blocked
or it has reached the limits of travel.
Operation and Performance
41