I just looked through the entire digest online using the search feature and looking for the word "fisher". The only thing is says in regards to what traps may be used in the taking of fishers is this:
"There have been no regulation changes regarding the types of traps allowed or sets that may be used to take fishers during this season."
Since you couldn't trap fishers before now, that leads me to believe that you can use any legal trap you want (not cable restraints) as long as they are set legally. In other words, you can use conibears provided they are set up in a watercourse.
"I suppose it is the way of hunters. We are very odd fellows." ~ Peter Hathaway Capstick