Trim Tabs

[chucker]

I was wondering what is the function of a trim tab (The little metal colored fin looking piece right above the prop on the lower unit)? I was told that it only effects slow speed operation so your boat trolls straighter, is this true or does it have any high speed effect on the motor.

I have a 90 hp tiller that can be a hand full and looking at options to lessen the torque steer of the prop. The motor is not too much trouble when it's calm but can be a hand full in big chop.

[Surface Tension]

The tab is there to counter the effects from the props rotation. If you have the motor trimmed to up to high during high speeds you can lose the tabs benefits because its coming out of the water.