I'ld be curious to know the general location your bro was. Live bait placed just in front of them is usually a sure thing. Something along the lines of medium sized adult bunker, large mullet, or even a threadfin shad (Greenie)which have been around the bunker schools from time to time this year. They will often be lazy when on top so a well placed cast is a must. You won't get too many chances before they fade away. Big flashy plugs will work as well, assuming you lead the fish and retrieve in an irratic motion pausing on occasion. Eels will also work as will a tube lure. Buctails with big worms will work also, but I have no experience throwing them at Cobia. As for the comment about hooking but not landing, as long as you have a medium heavy rod and a minimum of 200 yds. of 20 lb test, you should be able to land it. You may have to chase her, but no problem. One hint, decide where you are going to put the fish where it won't destroy anything before you sink the gaff. They go crazy once you stick em'!