"Map the trim function to a Joystick button and get used to press it whenever you move the stick, then release it again."
Does that include take off and hover?
Take off, yes. In fact, you may want to trim even before you take off as default position of the flightstick is a bit tilted backwards.
Hover, yes. Even when stabilized by autopilot, you will experience effects of wind, turbulence, AP inprecision etc, which you'll need to correct manually, using trimmer.