It's from prop torque, some lean right, some lean left, some don't at all, but you should be able to steer against it and keep everything straight. We sometimes want a boat to be a car, and they don't listen.
This is what I do and its fine. Im sure if I can upgrade to hydraulic steering, itll help and relieve some of the "work".
Its fine...ill adjust the trim tab some too to see if it helps.