July 24, 2012. Calling all Watauga and Avery girls: Bring your poles and a parent and enjoy a morning at Grandfather Mountain Trout Farm for the High Country Girl Scout Fishing Derby on Aug. 25. Find out what Girl Scouting is all about if you are not already one. Grandfather Mountain Trout Farm will provide all the materials and they will clean the fish for you to take home. Afterward, there will be a picnic.