The Jelly Caddis was originally tied for Great Lakes Steelhead by Nick Pujic, of the United States, using a product called Jelly Rope. Not able to obtain this material in New Zealand,
I began tying the pattern with Stretch Cord, with fantastic results.
Pink and chartreuse Stretch Cord Jelly Caddis are deadly on spawning-run rainbow trout. They are so effective I have not used a Globug on the Tongariro River, or anywhere else for that matter, in years. The reason they work so well is light coloured Stretch Cord - such as pink, light green and yellow - has fibre optic properties causing flies to glow under the water. Although darker colours, such as purple and brown, lack the fibre optic properties, they produce naturally translucent Jelly Caddis that work when fish are in a less aggressive mood.
Jelly Caddis Recipe:
HOOK: Heavy wire grub hook size 14-10
THREAD: Fl. Pink UTC 210 and Black UTC 140
ABDOMEN: Pink 0.5 to 0.7 mm Stretch Cord
THORAX: Black Arizona Synthetic Peacock dubbing or black squirrel dubbing