I pike fished for many years using a deadbait mounted on two treble hooks on a wire.
Generally it is effective, apart from when a flying treble gets tangled up in the net, which often happens. Many anglers suggest that a two treble rig allows you to strike instantly when the indicator moves. In my experience I've found that an instant strike often doesn't connect with the pike. So I tend to delay the strike for five or ten seconds.
I then started using a single size 1 long shank carp hook with smallish deadbaits. Generally the pike caught are hooked in the scissors.
About five years ago I switched to a single circle hook on a trace. I have had plenty of pike on them. I keep records of the fish I catch and I must admit that I miss more pike takes on the strike than when using two trebles. But any pike caught are much easier to unhook - usually the hook is in the scissors. Quick unhooking is important as I often fish swims at the bottom of steep banks with lots of undergrowth. There's very little space to move around. It can be difficult to unhook a big pike caught on two treble hooks in such conditions.
I use a single size 1/0 Mustad Circle hook for fish (smelt, sprats) up to about 6" long. Anything bigger and I'd change to a 3/0. I wouldn't use baits bigger than 7 or 8". I squeeze the barb flat with pliers.
If I get a take I quickly wind down to the fish about 10 to 15 seconds after the first indication, and then play the fish to the net. There's no need to strike in the accepted sense.
I must admit that on days when things aren't going well and I might have missed one or two takes on a single circle hook, I'll switch to two trebles.