I guess when the fish are really aggressive in the spring you may want to give circle hooks a shot to prevent them from gut hooking. Personally I've never gut hooked a fish on a bobber if I'm paying attention. I think that giving fish more time to swallow the bait is the consideration to go to circle hooks. If the fish are aggressive, then I just use a light wire wide gap bass hook. Lip hook them everytime. The only caution is light wires hooks tend to bend, so if I catch a big one, I'm gonna have to ease it.