Great stuff here!!! I've been looking for information on this in other sites and I have not seen this range of input/information elsewhere!.

After seeing the video about slide turns and looking up coordinated turns, I think that coordinated turns is probably the better thing to do. But, as other(s) have pointed out, knowing that you are a coordinated in a model or simulator's not easy or possible, not like on a real plane.

Which brings up another related topic, the fact that a real plane behaves and has different characteristics than a model, a model has different characteristics than a simulator. For example, I have made continuous 90 degree turns in simulator with a trainer.
- I suspect that a real trainer plane does not have enough power to do this, and would suffer a catastrophic structural failure if it came close to a 90 degree turn.
- I suspect that a model HAS enough power; but some, maybe many, of the trainers/ARFS would suffer structural failure in a 90 degree turn.

Yet it can be done in a simulator.

AND; not only is plane different from model different from simulator, but BIG differences between one model an another!!!

I'll add something else to the thread; some of the points/advice carry with them some context. For example, the statements
"If you want to steer with rudder, get a boat!
An aircraft is NOT turned with its rudder "

Well, I think this completely overlooks 3 channel planes with rudder only, doesn't it!!! The unspoken context here is "for 4 channel aircraft"; with an additional implication of "the design of the aircraft is such that the aileron is the preferred means of turning".

I came to this topic because I was wanting to improve my eye/hand coordination, specifically in the use of the rudder, for 2 issues

1) When coming in for a landing, especially at low elevation, I may want to make some adjustments to direction with little to no bank, so that the wing tip does not hit the ground. I believe that this skill will also help in cross wind landing as well, wouldn't it?
2) What if you lose ailerons? Hasn't happened to me; but I HAVE missed something on pre-flight and gone up with ailerons reversed-twice! In both cases, I quickly understood what the problem was. The first time I didn't have enough skill with rudder to keep the plane from augering in. The second time I WAS able to save the plane!!! So I find that skill useful.

After learning "rudder if aileron fails", I'm thinking of "power if elevator fails". That one seems a bit easier, as we practice that on final approach anyway.

Regards