Gusts have nothing to do with the idea of "downwind turn", and everything to do with the relative wind across the wing. No matter if the wind is 30 gusting to 40 or 0 gusting to 10. Effects are the same.

Add turbulent air due to the fact that models fly fairly low to the ground, and flying fields have trees and buildings near them, and you can throw a lot of discussions out the window. Trying to navigate across very choppy seas gives you all kinds of problems, and when you add a strong current to boot, it's enough that you have to constantly add correction after correction. Now add the fact that the modeler is outside of the airplane, on a fixed platform trying to control a model in a constantly-varying inertial field that's in no way connected to the modeler's fixed platform, and you now have the basis for a lot of incorrect conclusions based on too little actual knowledge of the systems involved.

The real answer? Just fly the plane!