Alright, that is some mighty positive feedback in this thread.
So what you are saying basically is that using the same analyzing tools that the professors and scientists use to make the airfoils, and that is "the very basis" for making today's high performance model airplanes like an F3B competition glider - is of no use. And that whatever airfoil you have on your wing at tip or root or if you have washout or not is of no consequence?
If you think the airfoils we discuss to learn about this is entirely wrong for use at the low Re range from about 100k/150k to about 300k/500k, then how about suggesting exactly what airfoils we should be discussing?
The relatively modern analyzing tools we have today is not the same as reality, but it gives and "indication" - a prediction of what you can expect from your wing design. This is what these tools are made for and they are absolutely necessary to any aircraft designer that have something just a little more complex in mind than an ugly stick, that is if you are designing a full size aircraft or a model airplane.
If you are to spend - lets say 2 years scratch building a scale model airplane, you want to have a good starting point and something that is likely to work like it should, yes?
"You need a wind tunnel and make about a 1000 test models before you can make your model airplane and know what you're doing" - don't give me that crap, it's bollocks.
Thanks for the interest and positive feedback, makes it all worth it...