My father inlaw has asked my son to tye up some Coho flys for fishing the Kenai river this summer. Heres a link to the basic Coho fly:

I wonder if theres a better version for this fly? If you were going to Alaska and fish for Coho salmon on the Kenai, what would you use? The Coho pattern calls for Fishhair, anyone familar with this material and where to find it?