It seems that may people think D bows are harder to shoot as accurately. Jimm Hamm and Dean Torges both wrote that they are more difficult to shoot accurately, among others.
However, Natives and the English did wonders with long bendy handle bows, and I've gotten several Robin Hoods, as well as being able to shoot a golfball on the fly.
My questions is, is it really that the bow bends through the handle, or is it because the bow is shorter (a favorite trait of both the bowyers mentioned)? I know the require more accurate spine, but I haven't had any trouble with long D bows, even heavy weight ones.