In my opinion, being able to do crazy, nuts things in trainers is great, Ido all kinds of stuff with my old trainer i shouldnt. But in reality, why in the world would somebody who will never fly 3D, nor has the desire, need to learn to do these things. If a guy is going to be taking off, flying circuits, occasional loop and roll, why the heck would he need to learn the other stuff. I say, its all based on what you plan to do, if what I mentioned is all you plan to do, and you are proficient and can perform landings takeoffs, without any problem, and regualr flight is a breezy, move on if youd like. You will get all kinds of opinions on all this stuff, but if you have the basics of flight downm taking off, landing basic flying, loops and rolls without losing alt. and exiting a loop on the same level no problem. Then go for it. Everyone has thier ideas of what is right, I suggest taking the bits and pieces of info that will help you and use them. Not to mention, some of the older guys that helped me when I was starting, while they have the most and best info, sometimes old habits die hard. IF an engine booklet says, run the engine rich and at full bore for a tank of gas to break her in, do it.... The technology andinstructions are there for a reason, but since they had been doing things one way for years they had me do it their way, ruined some equipment that way. Bottom line, when you are flying it solo with no trouble and are able to do the stunts and things you plan on doing for a long time, move on. Some people seem to think that a buddy box only works on a trainer.... get a second plane buddy box her unitl you can fly her, jsut like you trusty ol trainer!