I've recently started tying some Perdigon style flies, mainly the Gasolina and Rainbow Warrior to start off with. They've been great on the river putting me onto a lot of nice brown trout but sometimes after a few trout I find the krystal flash or mylar starting to unravel. I use Loon UV Clear Thin to coat my flies and do not use hemostats when removing the fly. All my Perdigons are tied on barbless hooks so when netted either the hook falls out or I am able to remove the hook with my fingers. I was wondering if there are techniques to make these flies more durable. I've read that UV Craft Resin may be better than the Loon at adhering to some of these synthetic materials and if I add a thread or micro tubing rib that it may help the UV adhere better to the fly. Any suggestion would be much appreciated.