When I learnt to fly, my instructor was kind enough to explain to me that you are not supposed to fly the trim wheel.
Was this ever explained to you?
Well when I learned to fly, the object of the exercise was to be in balanced flight at all times... that's what the little ball is for. So unless you like holding rudder pressure on the whole time you are flying, you trim the forces out with the trim wheel. Was this ever explained to you?
In the Van, you use that wheel an awful lot... change anything, you need to re-trim.
Although I suppose some here probably just fly it with the ball trying desperately to escape it's tube...