Fly Fishing Class: IMPA Fishing Excursion offers a FREE Fly-Fishing Class next to the Sun Valley Inn on Thursday August 11th from 4:00 pm to 5:00 pm. The Fly-Fishing Class is open to anyone attending the IMPA conference. You do not have to sign up for the Fishing Excursion on Friday to attend the class. The class is taught by instructors from Silver Creek Outfitters. Please indicate during your registration if you will be attending the Fly-Fishing Class. You may also sign-up at the IMPA registration desk on Thursday morning. The Fly-Fishing Class has 20 slots.