I disagree that any heavy wire hooks are required at all for pike flies. I have never had a pike bend any quality hook. Good "standard" wire hooks such as Mustad C52SBLN or Gama B10S are completely sufficient. The stretch inherent in fly line and your leader, as well the cushion of your rod do not generally allow you to "horse" a fish or put as much hard pressure on them as the guys with casting tackle and very heavy nylon or braid. Add to that, heavy wire is more difficult to set into the bony toothy mouth of a pike. You don't need heavy wire hooks.