I have a GWS Tiger Moth 400, modified to brushless and I usually fly that thing in winds over 15 MPH +. The problem with many RC pilots especially those who are learning is that they tend to depend too much on the ailerons for turning when flying in the wind. I have a Goldberg Cub with a old OS .60 four stroker in it and I won't fly if the wind is LESS than 10 MPH. That is when the fun begins. I love flying my Cub down wind then kick the rudder and using the ailerons cross control and keeping the wings level through the turn and then hanging it into the wind . You can not image the look and comments I get from other fliers. I tell them it is quite easy to do it just take a bit of practice. If you are going to fly in the wind you need to learn to use your rudder control, I know that is easier said than done. Stick planes are always a good choice for leaning to fly in the wind.