A few years ago at the Federation conclave they held a mystery fly contest for the tiers. Each participant was given a small bag of identical materials from which they were to tie two identical flies of their own design/pattern. A panel of three expert tiers judged the entries based on quality, originality, and use of at the materials. Like the "Iron Chef" points were deducted if all the materials were not used. Creativity in the use of the materials was a big plus.

Hope this helps,
Jim Cramer