I use it here in Australia on Australian Bass and Saratoga. (Do a search on the "Saratoga" for a great looking sport fish). Normally I do the body in dark colours as for both these fish the darker the better. I intentionally tie them with a long tail and then cut the length down as I am using them. For every fly there is an "ideal" length.
It is very easy to tie, if you want patterns and tieng instructions etc just pm me.
All my mates reckon it would be great on "catfish".
Kind regards... David