Good thinking. Maybe that’s why it rolls too. Too much trim down at speed…ie: bow steer.

Was testing someone’s boat this fall and it bow steered so much at 20mph with trim down my right shoulder almost hit the water. Holy fuk i thought i was going out of boat. Never witnessed that before. Little 18ft boat with colvo duoprop.

The roll is an issue at higher speeds, it’s a 25’ boat. I don’t enjoy going down a lake on my side doing 60mph+

Is the outdrive solid at the pivot points?
I have had a couple worn out that allowed "sloppy" steering.
Have the small skeg above the prop?
Have seen those and adjusting those make a little difference, but would not expect too much at all.

Does it have power steering, if so is it bled properly, air in system will cause it to walk at slow speeds

Bow steering is off-plane If the boat is leaning that much at speed, then it has to be a load issue. See if you can move some weight to the non--leaning side. If the boat seems balanced weight-wise maybe you have something else going on. Maybe you have water in the hull on the leaning side?

If all else checks out, trim tabs might be the only way to solve this. They help with getting on plane, low planning speeds, correct for side to side imbalances etc.

Trim tabs work all the time, unless you bring them up all the way and out of the water.

Gimbal Ring

Yeah probably bad advice. I thought you were talking about a real hydrofoil not a pretend foil "whale tale." Many have used on older cigarette hull's with great results in reducing porpoise, but that does not sound like the problem you were trying to fix.

Well a stepped hull doesn’t make balancing any easier. It doesn’t have anything to do with the steering. I’ve even moved my battery to my side to help, which it does but doesn’t fix the problem. Trim tabs won’t help after the boats already planed and it doesn’t take much to plane the boat.

Just laying out some history:
Where’s my speed at?

Where did I mention a hydrofoil in that??