[srf21c]

Loosen the nut with a socket. If the stern of the boat moves to port, adjust the trim tab to starboard. If the boat moves to starboard, adjust the trim tab to port. Tighten the nut securely. [links]

[traindirector]

Locate the trim tab. If your boat is powered by an outboard motor, the trim tab will be attached to the bottom of the horizontal cavitation plate that looms above the propeller. The trim tab resembles a small boat rudder. In the center of its base is a nut. here

[haselton37]

Torque steering -- when your motor tries to pull the stern of the boat in the direction in which the propeller turns when you're backing the boat -- is one of the small problems you deal with on a boat with a single propeller. When a boat moves, only one side of the propeller digs into the water as it turns, pulling the stern of the boat in the same direction. The solution lies in a device called a trim tab.

[Myst]

Observe the direction in which the stern of the boat moves when you back up. If the stern moves to port, that means you need to exert a force on the starboard side of the motor. more

[Stickboy]

Watch how your boat behaves when you back it; readjust the trim tab to fine-tune its effect on your boat, if necessary.

[calmsupplements]

That was last June. Then I realized the floor was soft in some spots and thinking that this might be the problem I teared the floors out to find that the bottom 2" of the foam was wet . but it was on both sides of the boat, front and back. What I figured happen is since there was almost no glass on the original plywood and the boat was probably stored outside, water from rain and snow got in under the floors. Now like I said only the 2" of the foam was wet and was on both sides therefore this could not explain the bad listing to the right. Also if I have to weigh all the wet foam I took out it wouldn't even be 50Lb in total (from both sides) therefore I don't believe that was the problem.

[gorschal]

Since then, I took the wet foam out, replaced the floors, didn't glass it yet, just in case I need to get back inside. more

[ElectricGoat]

Last summer I just purchased my first boat a 1991 Bayliner Capri 17' with a 70 HP Force Motor. I always wanted a boat and I finally got my wife to "let me" buy a used one since it's my first one.
We drove to Montreal and Ontario from Halifax and on my way back I picked up the boat from North Bay. Since we were on a schedule and we had our 2 small children with us, I never tried the boat on the water and just bought it on the previous owner's word. (stupid me :facepalm: )

[laszlo]

The boat sits level in the water, when standing still. Once I start accelerating, it starts to list to the right, the more I push the throttle, the more it lists until it gets to plane. Once on plane, I have the feeling that it wants to pull to the right. When I slow down , it immediately lists to the right and I have to pull the steering wheel hard left to counter act the listing to the right. I do have electric tilt/trim but that doesn't seem to solve the problem no matter how much I trim the motor. If I'm by myself and I sit on the left seat and accelerate, it goes almost perfectly with no list, but that's because I weigh 190Lb. As far as weight in the boat (besides me) there is not much. I have a battery that sits in the bow centered under the seats, and I even place the portable gas tank and the 20 Lb anchor on the left side to counter act the list, but no result. A month ago I went fishing and had placed a 8HP 2 strike Johnson motor on the left side, (motor weights 60-70Lb ) and it was still listing to the right. It's like as soon as I accelerate or decelerate , something is pulling my boat to the right. Even with my wife, on the left side and me on the right, it still tilts to the right, not as much but still.
The motor turns clockwise when looking towards thew bow and the small anode fin is perfectly centered. I also looked at the boat hull and there's no deformity that I can see, I mean it's got scratches and small dings but nothing major. more

[grrrl]

So if you have a four-blade prop, the pull will be harder because you have more torque with that four-blade prop. more

[GLR444]

Now there are a couple of ways to compensate for this. One of those ways is with the anti-ventilation plate trim tab. If your engine has one. Most of the smaller engines do, and this can help to take away that pull. here

[forchrissake]

These can be lowered a certain amount into the water to push the boat to the left or the right. As the plane comes down and meets the water, it will create a lifting force on the hull, driving the hull in the opposite direction. [links]

[hendi]

There are a couple of reasons why boats will veer off in one direction or the other. That is mainly because of how the boat is pushed through the water by the propeller.

[videodude]

Re: Boat Pulls Hard To The Right.. PLEASE HELP.

[nx2059]

Re: Boat Pulls Hard To The Right.. PLEASE HELP.

[Daniel]

Re: Boat Pulls Hard To The Right.. PLEASE HELP.

[ianwgner1]

It is a bit of trial and error how much to adjust the trim tab more

[skull88]

Yup, these guys are right on the money here's a couple of links that explain the procedure

[silverkknd]

My trim tab sits where the dealer set it 30 years ago, right dead centre. What I found that from a stop and hitting the throttle I have the engine all the way down to control bow rise, as it come on plane it starts pulling at the wheel but trimming out you hit a point with neutral steering torque and all is fine, also that point seems to be ideal for top speed and rpm. [links]