Hambone:-
I've been giving it a try, LOL, for years, LOL, actually decades.
I found, LOL, that using either will catch fish. LOL. The single hook , LOL, is easier to remove from Rockfish.....on trebles you often get a "button-up" where all three barbs are in and the Rockfish suffers.
I posted here , LOL, to find out what others think, LOL, because that's what you do on a fishing forum, LOL.....share information, ideas and seek input from others, LOL.
Since,LOL, using barbed hooks for salmon is illegal but using barbed hooks for bottomfish is legal,LOL, it puts a jigger between a rock and a hard place, LOL.
If you by-catch a salmon while fishing bottomfish using barbed hooks you are technically not supposed to retain the salmon, LOL. But I know that a lot of jiggers ignore that fact, LOL.
The single hook has a deeper cup on it and retains salmon better than a treble a lot of times,LOL.
I've often noticed with a treble, LOL, that even though it's a treble there often is only one barb impaled in the salmon's mouth.,,,the other two are facing the other way in thin air inside the mouth, LOL.
So in many cases it's easier for a salmon to throw a treble,LOL, because the cup on one barb is much smaller than a single,LOL and technically it's supposed to be a totally barbless treble hook,LOL.
If you are fishing bottomfish only with barbed hooks, LOL, then you don't have too much to worry about as far as the fish staying on,LOL. But as mentioned,LOL, it's often hard on the Rockfish and other species.
In the picture below I've converted trebles to "doubles" and used those many times , LOL. Because they are easier to get out of Rockfish, LOL. They work very well,LOL.
Drewski:- I've never used circle hooks for trolling or jigging.....mainly because I have been skeptical of their efficiency on the initial strike/hookup. I know some guys use them for trolling too.
But the design of the hook was initially meant for a fish that mouths the bait for awhile..........like longliners use for Halibut.
Do they REALLY work ok for trolling and jigging?
How do you get a fast hookup on a hook that was not designed for that effect at all?