Every time I go to Alaska (been there a few times) I tie up tons of flies, then buy all the hot patterns when I get there. Then I end up catching all my Salmon on purple egg sucking leeches and all my trout on beads. A good pattern that worked for me last year was tied with purple rabbit zonker strips (one for a tail and another wrapped round the hook shank)and a hot orange cone head for the egg. In addition to the cone it was heavily weighted so I could swing it right across the nose of a salmon hugging the bottom. In my experiance, they won't move very far to take something but if you can dance something right in front of them, they will sometimes smack it.