Fly Tying Demonstration, Allen.  TPWD volunteers from the Dallas Flyfishers Club will be on hand to show you how easy and fun it is to tie a fly. This free demonstration is open to beginners and novice fly fishers. Equipment and materials provided, or bring your fly tying tools if you have them. Held at Cabela’s on Highway 75. 6:00 p.m.- 9:00 p.m. For more information call (972) 618-6714.