Juice,
To be quite honest with you a delicate presentation isnt necessary for streamer fishing, I prefer the fly to smash the water, it brings attention to the fly, and acts like an injured baitfish and sometimes induces a vicious strike. What you have to ask your self is, what kind of line are you fishing? Is your leader too long? That may take part in your difficulty and ability to present the fly the way you want to. I generally fish specific types of integrated lines that have a sinking portion fused together with an intermediate or floating running line. THey cast better, and sink to the proper depth, and that being said require a minimal leader of 18-36 inches of heavy tippet....nothing less than 1x and more often than not 0x....this allows for easy turnover, less lost fish, and when you hook a rock or a bush you lose less flies. Lets face it, streamers are expensive, and you want to keep as many as possible. Also there is no need to fish light tippet while streamer fishing, you will be donating flies to the river and you are giving movement to the flies anyway, light tippets are'nt the norm...remember you are targeting those larger more dominant fish in a run...big fish, big tippets....good luck...