Not particularly. Although there is a slightly reduced chance of snagging hooks on rocks, once a circle hook is actually snagged, good luck getting it back, as the inward-curved point catches prevents it from drifting out or being pulled out without damaging the tip. That being said, I prefer to use j-hooks in rocky environments as I can set the hook immediately upon feeling a bite, and use that preliminary strike to yank the fish away from its lair. I feel that circle hooks are better for sandy-bottom or pelagic environments, where you can let the fish chew on the bait and run with it for a little longer.