I am another person who is really grateful to all those who have contributed to this thread. It is really useful for me as I am also at this stage of flying.
I started flying Control Line around 6 months ago and flown around twice a month ( I hope to fly more in future). I am disappointed that I have not made a great deal of progress but I can fly reasonable inside loops and Lazy Eights of variable quality. I am often wondering about things like handle position etc. and so great to read the advice.
Thanks to Kafin for starting the thread.
As noted above, learning is all about keeping the problem simple. Unfortunately, there is so much misinformation/old wives tales/Stunt Lore (AKA "bullsh*t) floating around about almost everything in stunt, and everyone very earnestly pitches in with it to "help", that you get innundated with conflicting and mostly-wrong advice and silly side arguments like above. So it is very difficult to sort out genuine help from well-meaning nonsense.
One of the most pervasive things that makes it hard is *trying to use ancient low-performance trainers*, particular, ancient low-performance *engines*. Even the most modest electric system obviates this problem, any usable system has a governor, and that is generally much better way to go than almost any IC engine. But start with someone else's old junk engines (Fox, McCoy, Supertigre, OS Baffle-piston) run like they used to back in the day, and many of the classic trainers are borderline unflyable. "Borderline unflyable" = requires expert skill to make a decent flight.
So, when various wags talk about "what about Joe Gilbert's Ringmaster, ha ha!", or "None of you guys ever beat Jim Silhavy!" is it is more-or-less proving my point for me. Is it any way surprising that world-class modelers with skill in the 99.9 percentile can make a go of it with less-than ideal systems? They can handle anything pretty well. That doesn't make it a good idea for a raw beginner, they need help.
My recommendations to make your life easier when training are well-documented. What I noticed is that my "full-house" competition airplane, and a lot of other people's, are both extremely easy to fly, and all fly almost the same way. They go where you point them, you stand there and drive them around. They would make absolutely perfect trainers - except for the fact they take 6 months to make and cost $2000+, and, that you would never get them set up as well as we do, because that is ALSO a critical and difficult-to-learn skill.
Unfortunately, classic "trainers" from the 40'S-50'S-60 sport/stunt planes with ancient 4-2 break "stunt" engines are barely flyable, and are extremely unreliable and inconsistent by comparison. What you really need is an airplane that is simple enough to trim and set up that even a beginner can do it with some simple instructions, and an engine that start and run reliably, and will provide modern-era performance. Also, to cut the *engine experts* out of the loop to the extent possible, because, whether they mean well or not, are the primary cause of people having unreliable or low performance (with some absolutely remarkable examples over the years).
Almost anything I know about it after about 30 years of on-and-off experiment is documented here and can be found by searching some terms like:
"small engine experiment"
"Brett Skyray"
"OS-20FP"
"BBTU" (a joke standing for Brett Buck Tune-Up, the joke being that there is no tune-up, you run the engine exactly as it comes from the factory)
and the like.
Brett