I keep it pretty simple when I double. I usually tie and over hand loop just big enough to fit my jig head back through once I've managed to double that line up and pass it through the small jig eye. I always try 2 different colors to see what they want better and rarely separate the 2 jigs by more than 3'. I usually keep the baits around 18-24" apart at the most. I only fish jigs tight lined like this since I worry minners would tangle up too bad and if I'm retrieving a jig it's only the one jig, although I've wondered if a guy could take the smaller bama rigs and tie on several jigs with a float slowly drug across the surface set to a designated depth and work. For example if you show the fish in 10 FOW on the graph in 20 FOW just set the float around 8-10' and troll or slow crank for them?