I'm probably late on the discussion but way too many modelers just fly bank and yank and never learn different then teach new people how to fly and the newbies learn the same and no one ever learn how to use rudder or even fly in a right hand turn because it was hard enough to learn to keep a plane in the air by bank and yank so once they learned that and were successful they never cared to learn anything else as far as pilotage and full controlling the plane.

This is is honestly dangerous and I don't let my students solo until they can taxi, take off in a strait line and land with a slip on the runway. If they don't learn to use the rudder takeoffs can go hard left and into the grass or people or crash the plane. Landings can be way off the runway. Crosswind operations are impossible and scary. Slow speed flight can turn ugly and aerobatics are always ugly without rudder not to mention your very limited in what you can do in the aerobatic box by ignoring the rudder.

I always suggest the first airplane should be a 3ch rudder/elev/throttle plane like a powered glider or slow stick or a simple cub like the PZ cub. This will teach the left thumb to work right off the bat and honestly you use the rudder and elevator in coordinated turns way more than the ailerons. Ailerons start and hold and end the bank. The rudder pulls the plane around the turn and the elevator controls altitude.

For those pilots who do not use rudder its never too late to learn and its nothing to be ashamed about not knowing yet.

Take ke a step back and get a trainer out and learn it. Practice using only rudder to turn.
The best trainer for this is a telemaster because they will not turn without rudder!

After er you can do a pattern in a coordinated faction practice figure 8s and then move on to forward slips to landing and knife edge slips that hold the slip but using throttle to hold altitude across the field.