Cannot have to short of a leader, but the norm is 18 to 24 inches. The cork popping is what attracts the fish and they look up and see the bait falling back down and hit it. I was fishing it one day and hooked up, short fight and lost the fish. We were in a nice school of reds and left it in place and popped it, fish kept grabbing the cork running off. They came right up to the side of the boat grabbing and running off with the cork. When i pulled the rig out of the water i noticed there was not any jig.. the first one broke it off. Retied and continued to catch over slot reds and 3 to 4 pound trout mixed on a point.
Friends, Fishing, Fellowship..RED X ANGLER