Here's my technique.
After seeing countless live eels and menhaden thrown at surface cruising cobia, (bouncing around with 30 other boats) I tied on a 3oz. spro jig.
After a lot of trial and error, I discovered the trick is to pitch the jig traditionally off to the side of the cobia. When you know they are aware of the bait, drop it into free spool.
You lose site of the 3oz jig cause it drops, but the cobia follows it because prey would try to flee instead of burning right by their noses. Let it drop slowly about 10-20 feet (your line should still be at an angle) then engage the spool and bring the jig up close to the boat with short aggravating action. By this time they are so focused on the jig, that they don't realize they are right under the boat. You'll see them swallow it, FISH ON!
My rig was fishing sort of light tackle with a Shimano Calcutta 400 and Shimano Teramar 7ft Medium Heavy 15-25 lbs rod.
30 lbs braid main line to a spider hitch with a bristol knot making the connection to 5' of 60 lbs fluorocarbon leader.
A 3 Oz. Green and white Spro jig has the battlescars.....
I will say after 4 fish the rod tip was starting to look unhappy.
Thanks,
Tal
www.talwillis.com