The colder the water gets the smaller your fly has to be to trick fish into biting. Don't worry though, winter is coming, but it's not here yet, which means the time for size 24 nymphs is later. For now, the Hotwire Caddis that we featured in the September Postfly Fly Tying boxes is the perfect fly for you to fool big trout all season long before your world freezes over. Learn to tie the Hotwire Caddis in the video below: Check out the list of materials and a printout of the tying instructions below, if you don’ like tying to a video. “It’s called old fashioned.” Don’t worry, we get it. Instead, sign up for a Postfly Fly Tying subscription now and get new materials and new recipes delivered to your door every month.