I have used circle hooks for several years now and do not know of any disadvantage. Yes the cat usually will run and if the rod has an active tip, the flex of the rod will bring it out to the cats lip at the right speed to get it in the correct position. I have had flatheads just set there and chomp on the bait or hold a steady mention on the line causing a slight bend but not a pull down. Then you have a choice of waiting or reeling down on the fish. Reeling down provides approximately the same removal speed as the fish running in the hopes of getting the hook in the correct position. Some will also do a (slow) sweeping action with the rod to achieve the same thing. The biggest advantage that I like is it has little chance of gut hooking the fish. I figure a gut hooked fish is a dead fish and I want them to stay healthy so I can catch them again. The comment that the cats do not swallow the hook, (I think) is not exactly right. The fish can still swallow the hook, just like he did the "J" hooks but because the point is turned inward, it gets pulled right back out of the throat and does not catch on anything until it gets to the jaw. Anyway, that is my three cents worth. As far as hook preference, I am a big fan of 8/0 Gamakatsu octopus hooks. I prefer the lighter wire over the heavy wire hooks and after years of use have not had a single problem with them yet. They brought in several over 50 pounds.