Strakes and extended surfaces work well enough. To me (and I have used them too) they compromise a model and add weight. A better more optimal solution is to take weight out of the tail. Enough weight reduction will require a fore relocation of the wing, meaning longer tail moment.
Current designs with huge forward fuse volumes destabilize the models in Yaw (and in pitch). Add the larger props and contra rotators of today, and yaw destabilization becomes greater still.
I have found that 1" movement of the wing makes a considerable difference in the model's directional stability and general handling in yaw..... It takes lots of effort to reduce aft fuse weight and vert and hor stab weights enough to allow wing movement forward. Whether the effort is worthwhile is up to the individual.
Moving the wing forward makes sense to me. Why do we have such long nose moments? Are there any current designs that have done this? Any downsides?
Jim O