The little things make all the difference when shooting a stick bow. I have been at a point where I wasn't improving much, could get good groups when I concentate, but it was a lot of work and then I still get poor releases and spry arrows around. The real key to a clean, consistent release is back tension, especially when you go up in weight. I watched this video on the rotational draw, which forces you to use the right back muscles, then went out and shot. What a difference in arrow flight rigth away, then my groups really tightened up when I got used to it and could think about aiming more. One thing that really helped was letting the string line up the bow as you drw, instead of forcing it with the bow hand; can't be relaxed when you do that. http://www.youtube.com/watch?v=6c8_-96h6BYI'll be watching more videos, didn't think a coach could help that much with out being there; videos show so much more than a book can explain.
The helical fletch help improve accuracy with the recurve ?