First I would like to welcome you to FAOL. You will not find a better site anywhere on the web. As for your question, I think CM Stewart has "nailed" it. Your buddy was getting his offerings down deeper than you were with flies. There are several ways to get your offerings down deeper. One would be beadhead flies like a woolly bugger, another is split shot about 12 inches or so above your offering and another is to use either a slow full sinking fly line or a sink tip fly line.
Without being there, I am willing to bet that going deeper with your flies is the answer more than the fly pattern. Try it and let us know what you discovered.
Again, welcome from Tennessee to FAOL.
Warren
Fly fishing and fly tying are two things that I do, and when I am doing them, they are the only 2 things I think about. They clear my mind.