I use the rudder all the time on all my aircraft. It's a good thing to learn. The benefits of rudder go well past coordinated turns. If you are thinking of trying 3D, rudder control is mandatory. With helicopters it's even more important to have the rudder thumb well trained. When you are trying to fly low and slow, the rudder is your best friend. When doing crosswind landings you need to have rudder control.
Full size super cubs are awesome. They are famous here in Alaska for good reason. While it's true that they tip stall and get into the "super cub death spiral" you need to remember a few things. The reason people die "cub deaths" by spiraling into the ground is strictly pilot error. Every plane has a stall speed, every plane. The circumstances around cubs are this: People are flying slow and low looking for animals. They find something and start turning around to look at it. They go so slow, so low, and turn so tight, that the inside wing goes below the stall speed and the plane slides sideways into the ground. If they were at altitude it would be easy to gain some airspeed and start flying again. Since people in cubs are hunting or sightseeing, they are too low to recover. Hence, supercub death spiral.
Any plane can do the same thing. A B52 was put into a steep bank at too low airspeed and altitude and slid into the ground. It's on youtube somewhere. The difference is the application. If you stall a Cessna 180 in the lower 48, you're probably nice and high and doing it on purpose or on takeoff but at least you're at full power on takeoff. The cub is still a plane, it's just a plane with stupid low speed capability and high payload. It's also front and back 2 seat high wing plane so the visibility is unparalleled.
Another note on STOL. If you watch videos of full scale STOL you will see lots and lots of rudder movement. To perform really short take offs and landings, you have to counter the torque steer from the engine thrust. You also need to be able to make corrections in your flight path while keeping the wings level. When you're going in somewhere really tight you need to skim the ground leading up to it. You don't want to be low and slow and start dipping your wings. When you're in a tight spot taking off, you need to adjust your path without having your wheels off the ground. Can't do that without rudder.
So, granted the cub will bank and yank just fine up high and at speed, but to realize the real benefits of the super cub you need to learn rudder.
It will be 'bank and yank'.
