OK, back to the taildragger............

With your Tower Trainer....... If it wasn't for bad luck, you wouldn't have no luck nohow, atall

A bolt on tailwheel works for any airplane that has a rudder that extends all the way down the fuselage. The Tower Trainer's rudder is up above the elevator. Tailwheels usually need direct access to the rudder and that airplane doesn't provide it.

A buddy recently converted an Eagle2 to a taildragger configuration. He isn't experienced and thought that a freewheeling tailwheel would work for him. The Eagle2's rudder is out of reach like the Tower Trainer's is. That setup gave us fits. To turn while takiing required airflow from the prop. Blow on the rudder with the prop and the elevator/stab lifts the tail and she starts pitching on her nose and ...... jeez it was too flippy. So I built a new tailwheel structure that'd work easily off it's own pushrod and we had a steering tailwheel.

When the rudder is out of reach, you'll need to get your steering from the servo. A pushrod is easy. Except that you then need the wheel's tiller to project out the side, not front to back. But it's really not hard to design. The execution depends on the details for how easy it is to do, however.