i like to gar fish when the catfish are not hitting. i use a nylon rope tied to fishing line and just throw it out to were i see a gar. When the gar come up they bite in to it and there teeth get stuck in the rope and then its your job to reel them in.
Depends on what kind of gar one is fishing for. Alligator gar take fairly large baits. I prefer about a one or two pound hunk of fish, preferably the head. Buffalo, drum, and bluegill make pretty good baits. Longnose and shortnose will take anything a catfish will, as well as lures. Don't particularly care for the rope lures as they tangle in the teeth and make release more difficult.