I have been fly fishing for 4 years - tying my own for about 2 1/2. When I first started tying, after mastering the standards (pheasant tails, hare's ears, etc.) I found that I really enjoyed tying soft hackles. Of all the flies I have tied, a gold ribbed hare's ear soft hackle is 14 and 16 have taken more fish than anything else.
On one occasion, I noticed some risers just downstream of where I was swinging a wet fly. It was then that I realized I could target rising fish by swinging the fly just upstream of the rising fish. And when a trout hits a wet fly on the swing, it slams it! When I had repeated success with that method, I then applied that approach to target fish in likely holding areas - at the head of a pool, or at the end of a riffle, or a the base of a submerged log. It amazed me how often the fish are where you think they are. As littlelehigh says, this taught me that presentation was likely more important that the fly.
And the nice thing about soft hackles, particularly the hare's ear soft hackle, is that it can represent a number of bugs in various stages of life.