100% barbless.
The circle is better than a barb for retaining a fish once hooked.
Doc,
I couldn't agree more! I know in a few posts you have commented on, we were talking about hangbacks and fishing circles. Me being primarily a fly fisherman, I have noticed that you can still strike quickly if you want with circles, AND keep the fish pinned. Owner also has some newer barbless hooks out that looks similar to a big river bait and a mosquito hook combined.
As for the pictures you had posted, try this out next time you hit the river--Downsize the hook size of the circles you are using by one or two sizes. The smaller hooks penetrate easier and find smaller corners and ledges of the mouth guaranteeing better hookups in the corner and even on the edge of the lip--similar to the moffit method.
I've found that gami octopus offset circles are amazing at this. My samples may not be salmon, but when I can tie a bucktail fly using a size 4 for smallmouth, I can hook a fish easily when they take with a hard hookset and get them every time on the lip. I'm 100% with it this year and thats over hundreds of bass.
What I do know, is if you can ELIMINATE SWING WEIGHT, you go down significantly in your odds of losing a fish.