I continued to cycle through my workhorse nymphs, as I replaced lost flies and advanced my inventory to target levels. Next on my agenda was the classic 20 Incher. The 20 incher was created in Colorado, and I have developed a strong relationship with this large stonefly imitation. I find myself defaulting to it more frequently, especially when I desire a deeper drift on my dry/dropper presentations. I tie the 20 incher on a size 12 2X long heavy hook, and then I add ten wraps of .02 non-lead weighting wire. This construction allows the 20 incher to sink rapidly without the aid of split shot. Quite often I fish through a series of attractive deep runs and pockets with no success, when I am certain trout are present. In these instances I conclude that my flies are not getting deep enough, and a frequent response is to combine the 20 incher with a smaller nymph. The 20 incher is more than just a heavy fly to sink my rig, as it also attracts its fair share of hungry fish.
For a nice recap of the 20 incher stonefly nymph check out my post of 01/13/2022. I counted my supply and determined that I needed to add only three to elevate my total to my desired level. I manned my tying bench and cranked these out recently. Two of them were refurbished from damaged flies, and this saved some tying steps as well as a hook, bead and wire wrap. I vacillated between using a turkey tail section or Tyvek for the wing case, but I settled on the natural look of the turkey. Coating the wing case with a layer of thin UV resin has also become a standard step in my 20 incher fly tying process.