It depends strictly what depth the fish are staying. I use 1/24th oz if they are suspended very shallow to 1/4 oz roadrunner if I'm fishing deeper or running faster than the 0.8-1.2 mph I normally longline at. 1/16 and 1/8 are my go to sizes. I'll try to run them on a similar amount of line out to cover as much water as I can. I use strictly 6 pound Viscious when longlining. Rarely will I use 2 jigs per line.