RE: Has anyone tried doing this?
I've heard and done a lot of leading edge changes with tri-stock on the wings, never heard of doing it to the tail feathers? On the wings, it does change the way a plane "penetrates". I did it to a .46 U-Can-Do to see if it would harrier better, I added tristock at first to just the prop wash areas and then eventually, most of the leading edge(about 2/3 span from root to tip). It did make the plane come in a lot "hotter" than before, but no other drastic changes. It did also help with harriers a little but adding tri-stock to the wing TRAILING edges so I got the deflection needed for spoileron mix did the trick to harrier.With about 45% up spoilerons, the little Do would harrier like a champ, very HA too. Its just that these little planes seem to 3-D best when its "foamy weather"(zero wind). Doesn't happen much around here.