A plane without alerons does not force youto use rudder.
WHY because on a ruder/elevator plane you plug the rudder in to the aileron chanel.

i practise using rudder by doing things like stall turns and knife edge, one good practise is to get the plane flying straight from left to right (or other way) and feed in aileron and oposite rudder and try and keep te plane going straight, it's not as easy as it sounds.

or take off cross wind on purpose, also not that easy as it goes aainst what were taught