The tiller extension is stuck against the tiller. Consequently, even though I'd rather steer with the tiller extension than the joystick, I am forced to use the joystick, because if I lean toward the centreline to reach the tiller, the boat heels over because I can't counter the heel angle. This is immersion breaking.

If the tiller extension worked, I could hike to windward and still steer by moving the tiller extension. This will be more natural than using a tiny joystick.