The name says it all with this fly. The Flash Caddis is a great choice when fishing waters with lots of caddis larva. It quickly became a favorite of mine to use on my home waters of Northern Wisconsin where caddis are one of the main source of food for the trout. My favorite way to fish it is as a dropper in a Euro rig or under a Chubby Chernobyl in a hopper/dropper rig. It gets down quick and with it's hard flashy body, it sure is a fish catcher!
Sizes are as follows:
Sz. 14 - 3.5mm bead
Sz. 16 - 3.0mm bead
Sz. 18 - 2.5mm bead
Sz. 20 - 2.0mm bead