Hello, welcome to JustAnswer.
How severe is the boat pulling to the right? Is this new?
this has been an issue since the boat was new. the dealer said thats how a narrow beam boat reacts. i love the boat other than this issue. at 50mph i have to turn the stearing wheel approx. 180 deg. to hold a straight coarse.
There is some pull because of the rotation of the prop, but it should never cause you to have to turn the wheel to correct it, you should only have to not let go of the wheel. even then the boat should only slightly veer to the right.
It sounds like you may have the boat loaded heavy on the right side. But you may have an uneven keel in the boat, or a hook in the bottom.
Are your batteries and helm on the right side on your boat? Is this condition worse when you are alone in the boat?
I was just making sure you had checked the simple things first, since they are most often the cause. You seem to have done so.
If the fiberglass keel, is un-true, or there is a "Hook" to the boats hull causing this, about your only recourse is tabs.
They will greatly help in this situation.