As far as i know, there are no Ferox, which is rather strange. I know two Ferox anglers that have tried, although the fact you cannot use lures or an engine does not help matters.
We used to catch the Char by fishing a Hi-D line with flies like Butchers, Silver and gold Whickems infact anything that was about a sixe 12 and "flashy". Cast a long line over deep water, let the fly line hand straight down then retieve the flies straight up. Once you find the depth the char are at, tailor you cast to suit.
Never ever caught a Brownie there, but then we were fishing for the Char. They are stunning fish by the way.