Dude, this is a no brainer. Of course you should be throwing trout lures. The more trout there are, the more keyed in the fish will get on them. With so many trout, yeah the bite could probably be pretty tough, but when the fish do feed, what will they feed on? Trout! So using a trout lure is a great idea. It sounds like the kind of place where you might go several days without a big bite. But I would bet that if you kept after it and kept throwing, you would stumble on a good day and probably pop a couple good fish.