I use the trim wheel on my go flight module to adjust trim. I do not look down and check position, with the exception of take off, where I set it at 4.5. On climb, cruise or approach I adjust the trim wheel to take my feedback stick to a position where it is not fully pulled back, or pushed forward. I have found like the real plane you will constantly be adjusting  the trim, as it burns fuel or gains/reduces alitude. I have a DVD's of the plane flying with Cougar Airlines, and the pilot is adjusting the electrical trim constantly, until the plane is set on autopilot.